Product details:

Wheels Manufacturing Eccentric BB Turn your PF30 or BB30 frame into a single speed. Wheels Manufacturing Eccentric bottom bracket takes advantage of the larger diameter shell and gives you the ability to adjust chain tension at the bottom bracket. Constructed of machined aluminum and fully serviceable. Features: Enduro ABEC-5 Angular Contact sealed bearings PF30 option fits bottom bracket shell widths from 68mm to 73mm BB30 option fits bottom bracket shell widths from 68mm to 73mm Choose from 22 or 24 mm spindle size options for or SRAM cranksets.