Hope Threaded 30mm MTB Bottom BracketHope’s threaded external bottom bracket is made from machined aluminium and kitted out with sealed cartridge bearings. This 30mm version is designed for use with chainsets with the larger 30mm spindle size, for more efficient power transfer. Suitable for all bike types, this smooth spinning component has advanced labyrinth seals to prevent water and dirt getting inside and to increase its durability.Features: Type: English Thread external type Bearings: Stainless Steel cartridge bearings BB Shell: BSA Thread BB Shell Frame Width Compatibility: 68mm, 73mm, 83mm, 100mm and 120mm Crank Spindle/Axle Diameter: 30mm Compatibility: All cranks with 30mm axles External bottom bracket designed for threaded bottom brackets Custom Swiss made bearings are double sealed which gives a much greater life span than stock units Free running labyrinth seal protects bearings and has less drag Cartridge bearings are replaceable Please Note: Specific fitting tool (HTT188) needed to fit bottom bracket (sold separately) Manufacturer Reference Number: BBSS30N Weight: 110gBuy Hope Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.