--- product_id: 4360782 title: "Miracle Caster! Extra Large Chair Wheels. 4\" Set of Five. Great for carpet. Replaces chair mat." brand: "miracle caster" price: "€ 187.24" currency: EUR in_stock: true reviews_count: 13 category: "Miracle Caster" url: https://www.desertcart.gr/products/4360782-miracle-caster-extra-large-chair-wheels-4-set-of-five store_origin: GR region: Greece --- # 130 lbs per caster load capacity 4" diameter wheels for smooth roll No chair mat needed on carpet Miracle Caster! Extra Large Chair Wheels. 4" Set of Five. Great for carpet. Replaces chair mat. **Brand:** miracle caster **Price:** € 187.24 **Availability:** ✅ In Stock ## Summary > 🛞 Roll Big or Go Home: Upgrade your office chair with wheels that conquer carpet and elevate comfort! ## Quick Answers - **What is this?** Miracle Caster! Extra Large Chair Wheels. 4" Set of Five. Great for carpet. Replaces chair mat. by miracle caster - **How much does it cost?** € 187.24 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/4360782-miracle-caster-extra-large-chair-wheels-4-set-of-five) ## Best For - miracle caster enthusiasts ## Why This Product - Trusted miracle caster brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Universal Stem Fit:** 7/16" diameter stem fits most office chairs—just measure to ensure a perfect, secure fit. - • **Heavy-Duty Strength:** Each caster supports up to 130 lbs, with a 5-wheel set holding 650 lbs static load—built for durability and reliability. - • **Ergonomic Height Boost:** Adds extra height to your chair, perfect for taller seating needs or improved posture without replacing your chair. - • **10-Year Carpet Guarantee:** Backed by a decade-long warranty against failure on carpet, ensuring long-lasting performance and peace of mind. - • **Effortless Glide Over Carpet:** Large 4-inch wheels roll smoothly on thick carpet and tile, eliminating the need for a chair mat. ## Overview Miracle Casters are premium 4-inch diameter chair wheels designed to effortlessly roll over carpet and tile, eliminating the need for a chair mat. Each heavy-duty caster supports up to 130 lbs, with a 5-wheel set holding 650 lbs static load, making them ideal for heavier individuals or those needing extra chair height. Featuring a 7/16" stem diameter for broad compatibility, these casters come with a 10-year guarantee against carpet failure, combining durability, ergonomic benefits, and sleek functionality for a superior office experience. ## Description Miracle Casters are large chair casters that offer several advantages over regular chair casters. Miracle Casters use wheels that are nearly 4 inches in diameter. That's twice the diameter of the cheap casters supplied on most office chairs! Because of their larger size, Miracle Casters roll easily over thick carpet and can also be used on tile. Think of the huge wheels on tractors and other heavy equipment. Miracle Casters work on the same principle. The bigger the wheel, the easier it will roll over a soft or uneven surface. Each caster is rated to carry 130 pounds, which means that a set of five will hold a static load of 650 pounds. However, for best results, we do not recommend Miracle Casters for individuals over 300 pounds. When used on carpet, each Miracle Caster is guaranteed against failure for 10 years. Miracle Casters fit many office chairs. PLEASE MEASURE YOUR CURRENT CASTER STEM TO MAKE SURE THE DIAMETER IS 7/16-INCH. A ruler, 7/16" wrench or 7/16" drill bit can be helpful when checking your stem diameter. The length of Miracle Caster stems is 7/8-inch. To avoid chair damage, your current caster stem should be between 7/8-inch and 1.25-inch in length. See photos for complete dimensions. Here's what people are saying: * Received your casters and they seem to be working great. I can move on the rug! - Eilleen H., Harrisburg, PA. * Wanted to let you know that I put the casters on my (Henry Miller) Aeron chair, and omigod they are awesome!!! - Richard H., Los Angeles, CA * Goodbye ugly plastic mat! Your casters went on an Aeron chair, and actually improved an already-excellent product. I've got a pretty bad neurological condition, which causes major pain; the Aeron has helped that, and your casters are little 'miracles' too, making a good product better. I've successfully ordered goods from the Internet for many years, but this is the first time I've felt I should write a company with my compliments. Keep up the good work! Many blessings. - Michael, GA. Review: Watch out for over-sized stem rings - plus 9 years later - Edit May 2022: Bought these and chair again in August '13 after a long-distance move, and both still going strong—so they definitely deserve 5 stars for longevity under a big heavy guy! Edit July 2013: These casters are still working perfectly on the Ravino chair nearly two years later. I am now ahead financially, having saved on two mat replacements, and that looks set to continue. Perfect rolling action, zero problems--this is a top-class product. I was ready to change my rating to five stars if the seller had updated their FAQ page to address the issues expressed here over the years. But no, they haven't--so I haven't. Great product let down by inattentive seller. Original review September 2011: Installed these yesterday after my chair mat almost succeeded in stabbing me with another broken shard of hard plastic. Fine casters so far, moving well on standard office carpet. I deducted a star after experiencing installation problems, and not finding a scrap of help on the seller's website. Seller, you already have a questions page, I recommend you include answers to some of the questions or issues raised in these reviews. First caster installed fine with strong hand pressure--as did the fourth, later. Second didn't, but eventually went in with some light tapping from a small hammer. However, this didn't work with the third [or fifth] caster, and I wasn't about to start any serious hammering. I tried different casters on different chair legs, in case it might be an issue of two maximum machining tolerances causing a failure. Getting the first two casters in suggested it wasn't the main caster stem which was the issue, and led me to quickly identify the problem as badly shaped metal rings in the groove at the head of the caster stem--they were jutting out too far beyond the diamater of the stem. They are very strong rings, I couldn't squeeze them smaller with a needle-nose pliers. I went with the easier solution of prying off the problem rings, and then using the rings from the old casters in their place. These other rings were a little more flexible, I was able to shape them with the pliers both to open [to get them on the stem] and finally close them a little. Miracle Casters popped in fine after doing this. The function of the rings seems to be to hold the casters in the chair leg, without one the caster was totally free to slide on and off the leg. I'm only guessing that you could use the casters just fine without the rings, but they'd fall off if you lifted the chair--not too big an occasional deal for most people, probably. Fyi, I'm using these casters with Alera Ravino Big & Tall Series High-Back Swivel/Tilt Leather Chair, Black , they might be overkill with smaller less sturdy chairs, especially ones without metal legs. Review: No more chair mat needed on my rug - When adjusted to its highest setting, my desk chair was about 3/4 of an inch short of the height I wanted it to be. These wheels gave me the height I needed while keeping my expensive chair. As an added bonus, I grew annoyed with replacing cracked plastic chair mats ever couple of years. Once I removed my plastic mat, the chair rolled with ease on my short area rug. The smaller stock wheels made movement too difficult without a mat. I had a tough time removing the wheels that came with and had been on my chair for a few years, but these snapped into place with a good smack. I'm very happy with these jumbo-sized casters. I thought they looked a bit silly at first due to the exaggerated size, but the functionality makes them a win for me. ## Features - These large chair casters roll more easily over carpet eliminating the need for a chair mat. - Heavy duty. Guaranteed not to fail when used on carpet. (See details below.) - Great for heavy individuals, people with mobility problems, or people who need a higher seat. - Caster stem is 7/16" diameter. See photos above and description below for other dimensions. - Sized to fit many office chairs but measure your current caster stem before ordering. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B001H96YRG | | Best Sellers Rank | #143,394 in Office Products ( See Top 100 in Office Products ) #225 in Office Furniture Casters | | Brand | Miracle Caster | | Brand Name | Miracle Caster | | Caster Type | Stem | | Color | Black | | Customer Reviews | 4.5 out of 5 stars 477 Reviews | | EU Spare Part Availability Duration | 10 Years | | Item Dimensions | 3.75 x 2.75 x 5.5 inches | | Item Weight | 1.96 Kilograms | | Load Capacity | 300 Pounds | | Manufacturer | Lifeweaver LLC | | Material | Plastic | | Material Type | Plastic | | Model | MC78 | | Mounting Type | Stem Mount | | Part Number | MC78 | | Surface Recommendation | Multi-Surface | | Unit Count | 1 Count | | Wheel Width | 2 Inches | ## Images ![Miracle Caster! Extra Large Chair Wheels. 4" Set of Five. Great for carpet. Replaces chair mat. - Image 1](https://m.media-amazon.com/images/I/41gn51zraAL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Watch out for over-sized stem rings - plus 9 years later *by B***E on November 30, 2011* Edit May 2022: Bought these and chair again in August '13 after a long-distance move, and both still going strong—so they definitely deserve 5 stars for longevity under a big heavy guy! Edit July 2013: These casters are still working perfectly on the Ravino chair nearly two years later. I am now ahead financially, having saved on two mat replacements, and that looks set to continue. Perfect rolling action, zero problems--this is a top-class product. I was ready to change my rating to five stars if the seller had updated their FAQ page to address the issues expressed here over the years. But no, they haven't--so I haven't. Great product let down by inattentive seller. Original review September 2011: Installed these yesterday after my chair mat almost succeeded in stabbing me with another broken shard of hard plastic. Fine casters so far, moving well on standard office carpet. I deducted a star after experiencing installation problems, and not finding a scrap of help on the seller's website. Seller, you already have a questions page, I recommend you include answers to some of the questions or issues raised in these reviews. First caster installed fine with strong hand pressure--as did the fourth, later. Second didn't, but eventually went in with some light tapping from a small hammer. However, this didn't work with the third [or fifth] caster, and I wasn't about to start any serious hammering. I tried different casters on different chair legs, in case it might be an issue of two maximum machining tolerances causing a failure. Getting the first two casters in suggested it wasn't the main caster stem which was the issue, and led me to quickly identify the problem as badly shaped metal rings in the groove at the head of the caster stem--they were jutting out too far beyond the diamater of the stem. They are very strong rings, I couldn't squeeze them smaller with a needle-nose pliers. I went with the easier solution of prying off the problem rings, and then using the rings from the old casters in their place. These other rings were a little more flexible, I was able to shape them with the pliers both to open [to get them on the stem] and finally close them a little. Miracle Casters popped in fine after doing this. The function of the rings seems to be to hold the casters in the chair leg, without one the caster was totally free to slide on and off the leg. I'm only guessing that you could use the casters just fine without the rings, but they'd fall off if you lifted the chair--not too big an occasional deal for most people, probably. Fyi, I'm using these casters with Alera Ravino Big & Tall Series High-Back Swivel/Tilt Leather Chair, Black , they might be overkill with smaller less sturdy chairs, especially ones without metal legs. ### ⭐⭐⭐⭐⭐ No more chair mat needed on my rug *by S***N on June 30, 2025* When adjusted to its highest setting, my desk chair was about 3/4 of an inch short of the height I wanted it to be. These wheels gave me the height I needed while keeping my expensive chair. As an added bonus, I grew annoyed with replacing cracked plastic chair mats ever couple of years. Once I removed my plastic mat, the chair rolled with ease on my short area rug. The smaller stock wheels made movement too difficult without a mat. I had a tough time removing the wheels that came with and had been on my chair for a few years, but these snapped into place with a good smack. I'm very happy with these jumbo-sized casters. I thought they looked a bit silly at first due to the exaggerated size, but the functionality makes them a win for me. ### ⭐⭐⭐⭐⭐ First impression after a weeks use, absolutely awesome on carpet *by R***N on September 22, 2022* These are everything claimed, Worth the price even with shipping to NZ These work supurbly on my desk rug on carpet. They're very gentle on both with their large surface area, roll easily and raise the chair base nicely offering lots of clearence for my old hanging out the bottom cylinder which was previously catching on the rug Purchased to replace office oasis blade, which were purchased to replace stock Aeron carpet castors. The blade style castors helped things one way by lifting the base, but crushed, and mangled the rug badly due to their small contact surface area. The Miracle castors are really comfortable, and feel very solid so far. They are biigg and make the chair somehow look more imposing.. but I like that too ## Frequently Bought Together - Miracle Caster! Extra Large Chair Wheels. 4" Set of Five. Great for carpet. Replaces chair mat. - Office Chair Wheels Replacement Rubber Chair casters for ALL Floors Including Hardwood Floors, Office Chair Castors for Home and Office Chairs to Replace Office Chair mats, 11x22mm, Clear (NOT 1KEA) - Mastery Mart Rollerblade Style Caster Wheels Replacement Set of 5 for Office Chair, Office Chair Wheels 11x22mm, Ultra Heavy Duty, Floor Protecting, Quiet Smooth on Floors (Not for 1KEA Chair, Black) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.gr/products/4360782-miracle-caster-extra-large-chair-wheels-4-set-of-five](https://www.desertcart.gr/products/4360782-miracle-caster-extra-large-chair-wheels-4-set-of-five) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-08-31*