PARK TOOL - BBT BOTTOM BRACKET SOCKETS 12-NOTCH
BBT-35-12 FEATURES
BBT-47-12 FEATURES
Fits 12-notch threaded bottom bracket tool fittings with a major diameter (outside of notches) of 50–53 mm and a minor diameter (inside of notches) of 48.2 mm, including:
BBT-79.3 FEATURES
Fits 12-notch threaded bottom bracket tool fittings with a major diameter (outside of notches) of 45–47 mm and a minor diameter (inside of notches) of 44 mm, including: