The Performance Tool W136P 4″ 3 Jaw Gear Puller is a durable hand tool made of alloy steel, designed for extracting gears with a maximum jaw spread of 4 inches. With three jaws and a reach of 3-1/2 inches, this gear puller is reliable for various automotive maintenance and repair tasks. The product comes with a California Prop 65 Warning, indicating that it may contain chemicals known to cause cancer and birth defects. Users are advised to visit the specified website for more information on potential health risks associated with this tool.