Rugged wheels spacers are made from T6061 aluminum alloy and are precisely CNC machined for accurate dimensions. Spacers can be direct bolt on and can use OEM studs. Each wheel spacer comes in 3 different thickness. Each wheel spacer comes with a 1 year warranty. If you are looking to widen the stance of your machine, clear larger tires or get some new rims, these spacers are just what you need.