1. The axle made by high strength chrome, bend proof, can support more than 500lbs2. The sprocket can be changed to other type, just make sure the dimension same as this 428 chain sprocket.3. The axle is symmetric, so the brake and sprocket can be moved to a different location.4. Axle perfect for vertical or horizontal engines with any displacement and electric motors.5. Fits 6″-10″ wheels with 3″ distance from bolt hole to another contiguous bolt hole.6. It has almost all the rear-end parts you need.Come with: (1) Axle(4) 145/70-6 Tubeless wheels with rim(1) Brake disc(1) 428 chain(1) 428 chain sprocket(1) Brake Master Cylinder(2) 1″ Pillow block bearings(2) 3 bolt pattern wheel hub(2) 4 bolt pattern wheel hub(2) Front wheel hub(2) Knuckles