JCZD Professional Bike Bicycle Cycle Crank Extractor Puller Bottom Bracket Removal Remover Tool for Mountain Bike Bicycle Repair

This bicycle crank extractor has the socket to remove the bottom bracket nut that retains the crankarm. The extractor helps remove the crankarm. The 20 teeth splined tool is used to remove the bottom bracket. I was able to replace a square taper bottom bracket with ease. The only thing missing is the wrench needed to turn the extractor and the ratchet to turn the bottom bracket splined adapter.

The puller threads are exactly matching my pedal crank threads. The wrench size required for the puller is 16mm, which is a size that is not common. The white part is machined slightly smaller and a 5/8" will fit. But the black part is machined slightly larger and the same 5/8' wrench will not fit. But an adjustable wrench will do the job.I did remove one star because the threads between the two parts of the crank puller are a little bit loose. It should have better machining tolerances. Since you have to use quite a lot of force to have the crank starting to move, I strongly suggest that you lubricate the puller threads using thick grease before use.The 20 teeth socket fits perfectly the crank of my Nakamura bike bought from Sports Experts. You will either need a 24mm wrench or a 1/2 ratchet.