Overall length 1120mm (44 inch) and the thickest part of the axle is 33mm(1.3″)Chain Sprocket: 530 37 Tooth 58mmBrake Disc Diameter: 220mm(8.66″)Spline teeth: 24T This is a versatile and solid keyed live rear axle for DIY rebuild go kart, ATV, Quad, Trikes, Golf CartsFits 8″-10″ wheels, made by high strength chrome, can support more than 500lbsPerfect for vertical or horizontal engine and electric motorAxle Kit come with: Axle + Sprocket + Brake Disc + 1″ Pillow block bearings + 4 bolt pattern wheel hub + 530 chain + Brake caliper