Shimano Bottom Bracket 68/122.5Mm Pack Bb-Un300 Bsa Square

SHIMANO 68/122.5MM BB-UN300 BSA SQUARE PACK Bottom Bracket Axle Length: 122.5 mmCrank Arm Mounting Method: SquareThread: 1.37” x 24T R/L – BSA (English)Collet Length: 68mmModel: EBBUN300B22XBearings: Cartridge SealedWeight: 310 gMaterial: SteelIncluded: SHIMANO BB-UN300 bottom bracket, 2 cupsThe bottom bracket shell is where the bottom bracket screws in. Before purchasing, check the shell width on your bike and the axle length you need. Standard sizes range from 68 to 73 mm.