Wheels Manufacturing BSA Bottom Brackets for frames that accept English (BSA) threaded bottom bracketsAllows the use of SRAM DUB compatible cranks with 29mm spindles to be used in a BSA threaded frameDurable and lightweight machined aluminum cups for outboard set upsFeatures Enduro 6806/29 ABEC-3 sealed bearings for smooth operation and long lifeBottom bracket is fully serviceableFits frames with 68mm, 73mm and 100mm (Without sleeve) bottom bracket shell widthsIncludes: (2) BB cups with bearings, (2) Silicon dust seals, (2) 0.5mm crank spindle spacers, (2) 1.0mm crank spindle spacers, (1) 1 - 2.5mm crank spindle spacerOver Bearing Width: 91.5mm in a 68mm wide shell (Over Bearing Width Dimensions include supplied silicone dust shields)16-notch x 48.5mm tool recommended (Not included)Item SpecificationsBB Shell Width (mm)100BB Shell Width (mm)68BB Shell Width (mm)73BB/Frame InterfaceEnglishBottom Bracket Shell I.D.1.37Defined ColorOrangeSpindle Interface TypeSRAM DUBWeight102 Wheels Manufacturing BSA Bottom Bracket Bottom Brackets UPC: 811079028167