Overall length 1120mm (44 inch) and the thickest part of the axle is 33mm(1.3") Chain Sprocket: 530  37 Tooth  58mm Brake 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 Carts Fits 8"-10" wheels, made by high strength chrome, can support more than 500lbs Perfect for vertical or horizontal engine and electric motor Axle Kit come with: Axle + Sprocket  + Brake Disc + 1" Pillow block bearings + 4 bolt pattern wheel hub + 530 chain + Brake caliper + 4x 22X10-10" tires wheels + 2x 4 stud hub + 2x knuckles