With an I-beam cross section for strength and bend resistance, these tire irons are made from forged chrome-vanadium steel (no stamped sheet metal) with a shot-peened surface for strength relief and nickel-plated for corrosion resistance. The rounded edges help avoid tube pinching and tire damage. Forged chrome vanadium steel Three lengths for the perfect fit for the application Set includes 9-1/2", 11" and 15" tire irons Manufacturer"s lifetime warranty