Park Tool # 647L Left Hand Threaded T47 Tap

The 647L is an M47 x 1.0 left-hand threaded tap designed for use with the BTS-1 Bottom Bracket Tapping Set to tap T47 bottom bracket shells. This tap is used on the drive side (right side) of the bike.

Specifications:
• M47 x 1.0 left-hand threading
• Sized for T47 bottom bracket shells