Threadless Cartridge BB Useful for frames with damaged BB threads.

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A great solution for repairs on bicycles with square taper cranksets where the bicycle frame has damaged or stripped threads in the bottom bracket.The patented design YST BB-993 th readless cartridge unit threads to itself and has bevelled cups for snug fit.Durable Steel cups, body and axle with sealed bearings.Compatible with 68mm English type BB frames. Show more