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B.B. Socket (Hollowtech II™)

B.B. Socket (Hollowtech II™)

Birzman CorpTaiwan

Compatible with Shimano® Hollowtech II™ and other 16-notch Ø44 mm external bearing bottom bracket cups, the Birzman B.B. Socket (Hollowtech II™) also works seamlessly with 16-notch rotor disc lockrings and Shimano® BB Tool Adaptors TL-FC24…

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About this product

Compatible with Shimano® Hollowtech II™ and other 16-notch Ø44 mm external bearing bottom bracket cups, the Birzman B.B. Socket (Hollowtech II™) also works seamlessly with 16-notch rotor disc lockrings and Shimano® BB Tool Adaptors TL-FC24 & TL-FC25.

Constructed from hardened steel for lasting durability and torque strength, this ½" Dr. socket delivers the reliability and precision every mechanic — professional or home — can trust.

Check with bottom bracket manufacturer for specific torque value settings.

All tools should be stored in a dry environment.