Animal Bikes Bottom Bracket KitThis high-quality BB kit features two sealed bearings, an internal spacer, two cone spacers and several smaller crank arm spacers for fine tuning chain alignment. It's quick and easy to install, so you'll be back at the skatepark or street in no time. This mid-sized kit suits all frames with a mid-type bottom bracket shell. Features: Material: 6061 Aluminium cores with Polycarbonate cones Shell: Mid-size bearings Includes: Cones, bearings, internal spacer and adjustment washers Sizes: 19mm or 22mm available Weight: 144.5gBuy Animal Bikes Components from Chain Reaction Cycles, the World's Largest Online Bike Store.