RFX Pro Series Lifting Jacks feature a single-post design for heavy loads. Made of high-strength steel and designed with a wide support surface for greater stability and a non-slip rubber pad for motorcycle safety. The single-pillar design incorporates a solid nylon bushing and a lever arm with progressive linkage to provide the smoothest, easiest action possible. Powder-coated to resist fading from sunlight and contact with washing chemicals, they are available in a variety of four colors to fit motorcycles from 125cc to 600cc. COMPOSITION: ALUMINUM