Barbecue Accessories -Bike Crankset 130BCD Chainring 53T Chain Wheel MTB BMX Crank Black Highlights brand generic Bike Crankset 130BCD Chainring 53T Chainwheel MTB BMX Crank Black Description: 53T single speed chain wheel with 130BCD crankset and threaded bottom bracket BB Socket Screw Made of high quality aluminum alloy, high strength, rustproof, strong but ultra light BCD: 130mm; Crank Arm Length: 170mm; BB: BC1.37-24T 38-73mm Hollow crankset sprocket shaft for single chain mountain bikes, road bikes, folding bikes. Comes with 53T single or multi-speed chainring specification: BCD: 130mm Crank arm length: 170mm Bottom bracket: BC1.37-24T 38-73mm Package includes: 1 set of bicycle crankset with chainring