American style BB for older three piece cranks American BB for 3-piece cranksets Fits 68mm American frames Steel construction Weight: 517g 68mm 24 tpi SQR JIS 122mm Steel 517g
American style BB for older three piece cranks American BB for 3-piece cranksets Fits 68mm American frames Steel construction Weight: 517g 68mm 24 tpi SQR JIS 130mm Steel 517g