Pro BB Socket System Pro BB:Insert, T47 12x52 New dual-side design accepts 25

New dual-side design accepts 25

Fits tube sizes from 19mm to 39mm (0

and easy handling

and 6mm hex sizes

and 4 Rx Micro-7

Pro BB Socket System Pro BB:Insert, T47 12x52 New dual-side design accepts 25Plug and Play BB Socket System Magnetic plug and play system replaces multiple BB sockets. Buy a single cup and pair with the inserts you need. Pair the Pro BB Socket Cup with Pro BB Inserts, sold separately, to adapt to numerous types of threaded bottom brackets, disc lockrings, and more. 7075 T6 aluminum socket is fully machined to precise tolerances for an exacting professional level fit. Features a 3 8" square drive for use with torque wrenches, a