--- product_id: 509326611 title: "Imperial M35 5% Cobalt Drill Bits Set (1/16-1/2 Inch,17PCS) for Hard Metal and Stainless Steel" brand: "stroton" price: "€ 72.50" currency: EUR in_stock: true reviews_count: 6 category: "Stroton" url: https://www.desertcart.gr/products/509326611-imperial-m35-5-cobalt-drill-bits-set-1-16-1 store_origin: GR region: Greece --- # 68 HRC hardness for superior heat resistance 2-3x faster drilling speed 5% Cobalt Steel for extreme durability Imperial M35 5% Cobalt Drill Bits Set (1/16-1/2 Inch,17PCS) for Hard Metal and Stainless Steel **Brand:** stroton **Price:** € 72.50 **Availability:** ✅ In Stock ## Summary > ⚡ Drill Like a Pro, Last Like a Legend ## Quick Answers - **What is this?** Imperial M35 5% Cobalt Drill Bits Set (1/16-1/2 Inch,17PCS) for Hard Metal and Stainless Steel by stroton - **How much does it cost?** € 72.50 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/509326611-imperial-m35-5-cobalt-drill-bits-set-1-16-1) ## Best For - stroton enthusiasts ## Why This Product - Trusted stroton brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Efficiency Booster:** Run 2-3 times faster than standard bits, saving you time on every project. - • **Precision Engineered:** Triple-ground cutting edges deliver razor-sharp accuracy and clean cuts every time. - • **Unmatched Durability:** Premium 5% cobalt steel ensures long-lasting performance even on the toughest metals. - • **Versatile Powerhouse:** Designed to drill through stainless steel, hardened steel, aluminum, wood, PVC, and more. - • **Cost-Effective Excellence:** Lower cost per hole thanks to extended tool life and superior chip resistance. ## Overview The Imperial M35 5% Cobalt Drill Bits Set features 17 precision-engineered bits ranging from 1/16 to 1/2 inch, crafted from premium cobalt steel with a 68 HRC rating. Designed for professionals tackling hard metals and stainless steel, these bits offer exceptional heat and wear resistance, triple-ground cutting edges for clean, fast drilling, and versatility across multiple materials. Ideal for those who demand speed, durability, and precision in every hole. ## Description Product Description Why Choose Premium STROTON Cobalt Drill Bits? Researches have shown that compared with HSS without cobalt, HSS with cobalt has higher temperature resistance, red hardness, wear resistance and heat treatment response. Red hardness, which means that the drill bits hardened steel can maintain hard at 860-880℃ . 68 HRC,it means that the drill bits has 3X cutting ability and 3X durability. This drill bits set is made of True Premium Cobalt (80,000 dollars per ton). Truly Made of 5% Cobalt Alloy Steel This drill bits set definitely have more cobalt in them than the "Cobalt" bits that HF sells--which are just Cobalt coated or only a tiny amount of cobalt tipped. Compared with ordinary high speed steel, 5% cobalt provides better heat and wear resistance,and Hold up Better. 3X Drilling Efficiency + 3X Tool Life Split Point design tip starts drilling immediately with less force and eliminates "walking" across the work surface. Ideal for Stainless steel,Mild Steel,Iron,Hardmetal,Aluminum,Copper,Plastic and Hardwood. The drill bit can be used for mechanical maintenance, such as drilling out bolts and screws. Be vertical to the workpiece Non-vertical use may cause the drill bit to break. Using a drill press with sufficient power will make drilling easier. Low speed: 200 to 1000 RPM Too high speed may burn the bit tip. Drill diameter≤3/16，RPM（1000~700） 3/16-3/8，RPM（700~350） 3/8-1/2，RPM（350~200） Use cutting fluid Add stainless steel tapping oil or engine oil to prevent the stainless steel from overheating. It also works adding some vinegar,soy sauce or water. Remain steady and patient The drilling shall be started slowly by applying force slowly and gently until the drill bit starts chipping. STROTON Ture Cobalt Steel Products for Stainless Steel, Hard Metal, and Wood. 1/16-1/2 Inch (17PCS) 1mm-10mm (19PCS) 1/16-1/4 Inch (13PCS) 4mm-32mm (15 Steps) Metric Small packaged Review: quality - Excellent quality nice case keeping drills organised Review: reliable - very good ## Features - Premium 5% Cobalt Steel ,68 HRC (Rockwell Hardness Scale) ,the Cobalt Usually Give the Best Heat,Wear and Chip Resistance and Long Tool Life. - The Cutting Edge has been Ground Three Times and is made of Cobalt Steel, which has High Hardness and Heat Resistance. It is Designed for Drilling through Stainless Steel, Hardened Steel, Iron, Aluminum, Pipes, Wood, PVC, and Plastics. - This Heavy Duty Work Cobalt Drill Bit is Typically Capable of Running Two to Three Times Faster.Despite the Higher Price,the Cost Per Hole When Using Cobalt Drill Bit Will be the Lowest,Since It Can Produce So Many More Holes. - The Sufficiently Sharp Bit Edge Can Cut the Metal Material into Long Strips of Iron Chips rather than Slowly Grinding Through the Material with a Blunt Drill Bit. - 17Pcs 135 Degree Cobalt Industrial Hss Imperial Drill Bits Kit Includes :1/16 (2pcs), 5/64, 3/32 (2pcs), 7/64, 1/8 (2pcs), 9/64, 5/32, 3/16, 7/32, 1/4 (2pcs), 5/16, 3/8, 1/2 . ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09MRW8399 | | Best Sellers Rank | 129,860 in DIY & Tools ( See Top 100 in DIY & Tools ) 1,059 in Drill Bit Sets | | Brand | STROTON | | Country Of Origin | China | | Customer Reviews | 4.5 out of 5 stars 525 Reviews | | Cutting Angle String | 135 Degrees | | Cutting Diameter | 0.5 Inches | | Cutting angle string | 135 Degrees | | Cutting diameter | 0.5 Inches | | Finish Types | High Speed Steel,Stainless Steel | | Finish type | High Speed Steel, Stainless Steel | | Item Dimensions | 18 x 13 x 4 centimetres | | Manufacturer | STROTON Ltd | | Manufacturer Part Number | Cobalt 6 series bits inch 1/16-1/2 | | Material | Cobalt | | Minimum Bore Diameter | 0.06 Inches | | Model Number | Cobalt 6 series bits inch 1/16-1/2 | | Number of Flutes | 2 | | Number of Pieces | 17 | | Point Style | Split Point | | Set Name | 17-Piece Set | | Shank Type | 3-flats,Round | | Shank type | 3-flats, Round | | Surface Recommendation | Metal, Plastic, Wood | | Tool Flute Type | Spiral | | UPC | 643459994935 | | Unit Count | 1.0 count | ## Product Details - **Cutting angle string:** 135 Degrees - **Cutting diameter:** 0.5 Inches - **Finish type:** High Speed Steel,Stainless Steel - **Material:** Cobalt - **Shank type:** 3-flats,Round ## Images ![Imperial M35 5% Cobalt Drill Bits Set (1/16-1/2 Inch,17PCS) for Hard Metal and Stainless Steel - Image 1](https://m.media-amazon.com/images/I/81nznZfGTrL.jpg) ![Imperial M35 5% Cobalt Drill Bits Set (1/16-1/2 Inch,17PCS) for Hard Metal and Stainless Steel - Image 2](https://m.media-amazon.com/images/I/71XK-6BMgKL.jpg) ![Imperial M35 5% Cobalt Drill Bits Set (1/16-1/2 Inch,17PCS) for Hard Metal and Stainless Steel - Image 3](https://m.media-amazon.com/images/I/71SicZwUs9L.jpg) ![Imperial M35 5% Cobalt Drill Bits Set (1/16-1/2 Inch,17PCS) for Hard Metal and Stainless Steel - Image 4](https://m.media-amazon.com/images/I/71rPwB55ZzL.jpg) ![Imperial M35 5% Cobalt Drill Bits Set (1/16-1/2 Inch,17PCS) for Hard Metal and Stainless Steel - Image 5](https://m.media-amazon.com/images/I/71Q-VSYomiL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Are these good for make holes in steel material?** A: Yes，good for drilling steel.Generally, sellers purchase products from the market and sell them on e-commerce platforms. The STROTON drill bits we sell are designed and produced by our factory, including the case, which is unique on the market. This drill bit contains 6% cobalt, which is higher than general products. In addition, STROTON hss drill bits have a secret heat treatment recipe.So They’re good at drilling steel. **Q: Where are these made?** A: They are made in China. They are very good cobalt drill bits set.It is designed and manufactured by STROTON, different from the similar products in the market. ## Customer Reviews ### ⭐⭐⭐⭐⭐ quality *by D***R on 28 March 2026* Excellent quality nice case keeping drills organised ### ⭐⭐⭐⭐⭐ reliable *by A***R on 16 February 2026* very good ### ⭐⭐⭐⭐⭐ calidad y precio en México *by J***Ú on 6 March 2026* Excelentes para perforar acero inoxidable, al hacerlo hazlo a baja velocidad, lubricando constantemente y con cuidado. Son muy afiladas y de buen material ## Frequently Bought Together - STROTON Cobalt Drill Bit Set (1/16-1/2 Inch, 17PCS), M35 High Speed Steel Twist Drill Bits for Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood - amoolo 3/8" Cobalt Drill Bit(5Pcs), M35 HSS Metal Drill Bit Set for Hard Metal, Stainless Steel, Cast Iron - BECOLLO 1/4 Inch Cobalt Drill Bit Set, M35 Jobber Length Twist Drill Bits,Suitable for Drilling in Hard Metal, Stainless Steel, Cast Iron,10 Pieces --- ## 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/509326611-imperial-m35-5-cobalt-drill-bits-set-1-16-1](https://www.desertcart.gr/products/509326611-imperial-m35-5-cobalt-drill-bits-set-1-16-1) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-05-31*