Designed to be a superior product. I-beam cross section for strength and bend resistance. Forged chrome vanadium steel (no stamped sheet metal). Shot peened surface for strength relief. Nickel plated for corrosion resistance. Rounded edges to avoid tube pinching, tire damage. 3 lengths for the perfect fit for the application. Ergonomically rounded edges, designed to avoid injury. Set includes 9-1/2", 11" and 15" tire irons. Manufacturer's lifetime warranty.