Park Tool Right Hand Threaded T47 Guide #648R

The 648R is a T47 (47mm x 1.0) right 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 non-drive or left side of the bike. This side of the bike drive uses a clockwise or right hand threading.