BSA thread (1.37"), hollow axle bottom bracket cups with industrial bearings and plastic housing, Gutter Seal Technology, grey Type Article Version GXP Main colour grey Bearing type Industrial bearings Bottom bracket standard BSA Bottom bracket shell width 68 mm This SRAM Bottom Bracket features Gutter Seal Technology for a drastic improvement in sealing against the elements and reduction of friction. Gutter Seal Technology™ improves sealing against the elements and reduces friction. Sealed cartridge bearings. English/BSA thread (MTB/Road: 68/73mm). SRAM Article number: 685943 EAN-code: 710845646188 Supplier number: 00.6415.045.000 Retail packaging: Yes