Tripeak BB Metal Cartridge WrenchFeatures: Material: CNC machined aluminium " Dr. socket compatible with Shimano Hollowtech II or other 16 notch 44 mm external bearing bottom bracket cups, and 16 notch rotor disc lockrings. Compatible with other 12 notch ? 50mm external bearing bottom bracket cups. 44 mm 16 Notch & 50 mm 12 Notch (Both Side Use) Sizing Information Size: Standard.
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