Park Tool Left Hand Threaded T47 Guide (#648L) colour-white-black Ariaprene Mesh: Ariaprene® technology is

Ariaprene Mesh: Ariaprene® technology is designed to feel and perform like a second skin

day or night

Combination: 11-12-13-14-15-17-19-21-24-28T

Q-Factor: 178mm

Roc Loc 5 allows you to easily custom tune the fit tension and the fore-aft tilt of the helmet in seconds using a single hand

Park Tool Left Hand Threaded T47 Guide (#648L) colour-white-black Ariaprene Mesh: Ariaprene® technology isAbout Park Tool Left Hand Threaded T47 Guide (#648L) The 648L is an M47 x 1. 0 left hand threaded standard guide for use when facing bottom bracket shells with the BFS 1 Bottom Bracket Facing Set and 690 XL Oversized Facer. This guide is used on the drive side (right side) of the bike. Features M47 x 1. 0 left hand threading Sized for T47 bottom bracket shells About Park Tool Park Tool are the world's largest bicycle tool manufacturer. Located in St.