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NOTE: For sharpening services of cutting tools see Park Tool Sharpening Services. Always use cutting fluid such as Park Tool CF-2 when machining.
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The 691 is a replacement tap for the BTS-1 Bottom Bracket Tapping Set in the 1.370" x 24 TPI right hand threading standard. This tap 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.
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- Quick-release, quick-adjust feature: bottom portion slides off and on easily without threading
- Optional accessories include over 20 different reamers and facers for numerous headset and bottom bracket standards
