Oumers Bike Crank Puller Tool Set, Bike Crank Extractor Bike Bottom Bracket Remover Hex Allen Wrench 16mm 15mm Spanner Wrench Fit for Removing Bicycle Crank

Decent product for removing crank and bottom bracket.Good value and good quality sturdy tools. No need to buy anything more expensive for home bike maintenance.More than happy with this purchase.

Nicely packaged and reasonable

Good set of tools, done the job ok however I did have to put an additional bolt in the centre of the crank to push off to release the peddles.

After a bit of knuckle scraping (it's advisable to know your 'leftie loosie, rightie tightie' rules in advance) - the job was done. The pedal spanner needed a light hammer tap just to break that initial grip. My Pedal Crank bolts were so tight, the Allen wrench needed a 300 mm length 12 mm copper pipe extender to undo the pedal crank bolts. The pedal crack puller worked well, with a bit of initial stiffness. The hardest part was the drive-side splined nut (the opposite splined nut came off with no effort) - this needed an adjustable wrench and a sledge hammer to release it - in a clockwise direction! The tools survived this punishment - so I can use them again if I need to. Very happy.

Firstly I haven't used the chainring spanner, so I can't comment on this.Secondly, all items were Oumers with the exception of the chainring spanner (can't make out name, it looks like BOX but it's like a bunch of lines rather than a character ) and allen/hex key (unbranded).I used these tools on a Shimano FC-TY501 crank and chainring set, with a square taper cup and cone bottom bracket with a 20 internal spline system.You get a spanner with an open and closed end, chainring spanner, crank extractor, bottom bracket removal tool for 20 internal spline system, allen key and an adapter that fits on the allen key.The open end of the spanner was able to take off the pedals from the crank - You rotate it towards the back of the bike - something I had to stop and check.The allen key was suitable for taking off the bolts on the cranks. The diameter of the bolt should be similar in diameter to that of the crank extractor pin. If the crank bolt diameter is significantly larger, or the opening on the crank where the bolt was removed from isn't square, you probably have some other system like the octalink/ISIS (not that kind)/other variant and the crank puller won't work on these.After the bolt is removed, examine the opening to make sure there is no spacer or washer remaining otherwise using the extractor won't work.The crank extractor should be fitted in initially by hand to make sure it isn't cross threaded. It should go in easy at first and encounter a bit more resistance as you tighten it in. I did do some damage to my left hand crank threads because I thought it was in straight but it was actually at a slight angle. I would recommend threading it in a bit by hand and give the crank a complete rotation, examining whether than extractor remains straight or deviates sideways when you spin it. If it deviates, then back it out and try again (if bottom bracket has play in it this method will be not be as useful).Once you're confident that it's in straight, make sure it's fully seated in so it's secure. You may need to remove the internal driving pin out and use the closed end of the spanner to tighten the crank extractor. You can then thread the driving pin back in* and use an adjustable wrench or a 14mm allen key to tighten the pin to press on the taper. Unfortunately I found an adjustable wrench would slip off here too much (too narrow area to hold on to) and all the allen keys I have were considerably smaller than 14mm. No other tool provided in the kit would work. Fortunately I had bought another crank extractor that I could use on a 1/4" socket wrench, so I used that. *Correction: You can leave the closed end of the spanner on when you're threading the driving pin. This didn't occur to me at the time.Once both cranks and chain ring were off, on the bike I was working on it had a lock ring on the left hand side of the bottom bracket. Again no tool in the kit was suitable but luckily I remembered this and ordered the correct spanner for it. If you are dealing with just a sealed cartridge bottom bracket, you likely won't need this tool.Once the lockring was off, I inserted the bottom bracket removal tool but unfortunately have not been able to take it off because I think it's not been greased properly and has seized up.The removal tool like all the others I have seen seem to have poor engagement in the splines. It has a 1/2 inch opening for a socket wrench but I have only a 1/4" one at hand. There was an adapter that came in the kit that you can fit over the allen key and insert it into the back of the removal tool but with the poor spline engagement of these tools and poor leverage, the tools pops out too easily.Currently waiting on an m8 fine pitched (a course pitch is not suitable in my case) 50mm bolt so I can loosely secure a it through a washer and then through the BB tool and use a larger spanner for leverage. Hopefully that should work.Update: After ordering and receiving a longer bolt, and using a piece of scrap metal with a 8mm hole to act as a washer, I had managed to tighten the bolt into the taper enough to secure the tool, but not too much that there is no space for the cups to back out of. I had to have someone sat on the bike to hold it still, and used a 150cm tubing on the handle of the adjustable wrench for leverage to work the bottom bracket off. Such an ridiculous amount of torque involved, but upon inspection afterwards there was no rust. I think maybe the threads aren't as clear as they should be, even after cleaning them out. Regardless, the bottom bracket tool with the washer and longer taper bolt worked and held out even after doing both sides. Considering the forces involved to do so it should be suitable for most if not all users.Overall, the tools are decent but I think the decision to have end of the crank extractor work with a 14mm hex key instead of a 1/4 socket was a poor choice (even if you can use the closed end of the spanner) and a 1/2 inch socket opening on the BB tool means you need to have these tools on hand or else the value of this kit goes down. I can forgive them for not including an adjustable wrench since it's a tool pretty much everyone ought to have at least one but you would need a thinner one to use it this extractor.

Very good Bike Crank Extractor keys.

A good basic tool to remove/install the bottom crankset.

backstory:Recently I was teaching my brother about pedals and cranks ect and whilst installing a pedal he completely stripped the crank arm, I was looking at converting to a single speed for my mtb anyway so instead of fixing the threads I opted to changed the cranks out for something lighter, sleeker and a lot less heavy! After looking around online on how to do this I quickly realised I didn't have the tools required; 2 mins later I find this bundle for an amazing price compared to brands such as park tool (the best bike specific tools atm imo)How the tools performed:Removing the allan bolt in the middle was a breeze with the 8mm allen key, perfect leverage due to it's large size!Removing the crank was a lot of work as the spanner(?) wasn't really long enough for the leverage needed to loosen it although after pushing with the crank one way and using the spanner the other I manged to loosen it then it almost instantly became hand tight so it was nice and easy to remove4* for "Easy to use" as the spanner could have been an inch longer for the leverage5* for "Value for money" as you get all the tools required for quite an important part of bike maintenanceWould I buy again? Yes 100% no doubt about it. good bundle for the home mechanic who likes to keep their bikes ect in good working orderTLDR: If you're looking to do any work to your cranks/pedals buy these tools! it's all you will need (Atleast for my job of changing cranks on a average priced mtb)PLEASE PLEASE REGREASE/GREASE THINGS AS YOU GO!

The set is sturdy and useful for tuning up my bikes! Recommend +++

This is exactly what you need to remove any bicycles bottom bracket. No any other tools needed.One recommendatiom is to lubricate the threads on the crank removal tool, otherwise the tool is rough to screw out.Build quality is solid. Zero complaints.

Per il momento tutto ok

Funktioniert Perfekt.

ME GUSTÓ LO UTLIZE PARA LA SPINNING