The 693 is a 36 mm x 24 TPI right-hand threaded tap designed for use with the BTS-1 Bottom Bracket Tapping Set to tap Italian threaded bottom bracket shells. This tap is used on both sides of the bike, as both sides of the Italian standard are right-hand threaded.

• 36 mm x 24 TPI left-hand threading
• Sized for Italian bottom bracket shells
• Sold individually but two are required for tapping

NOTE: Always use cutting fluid such as Park Tool CF-2 when machining.