Park Tool BTS-1 Bottom Bracket Thread Tap Set-BSA

The BTS-1 is a precision tool system that provides a controlled means of threading the threads in the bottom bracket shell of a frame. After threading, the taps serve as a guide to hold the supplied facing cutter perfectly perpendicular to the axis of the bottom bracket, allowing the faces of the bottom bracket shell to be cleaned.

FEATURES: 

Includes:

• 1.370" x 24 TPI right-hand tap - English adjustable cup (Part #691) 
• 1.370" x 24 TPI left-hand tap - English fixed cup (Part #692) 
• 45 mm facing cutter (Part #690)

Also available:

• 36mm x 24 TPI right-hand tap - Italian (2 required) (Part #693)

NOTE: For sharpening services of cutting tools, see Park Tool Sharpening Services. Always use cutting fluid like Park Tool CF-2 when machining.