Park Tool 692 1.370 x 24 Lefh Hand Threaded Tap for BTS-1 Tool Soiled PK-247-U11
The #692 is a 1.370" x 24 TPI left-hand threaded tap designed for use with the BTS-1 Bottom Bracket Tapping Set to tap English threaded bottom bracket shells. This tap is used on the drive side (right side) of the bike.