●Material: Hardened steel ●Thickness: 3mm or 1.4mm ●Hole Diameter: 1 inch (25.4 mm) ●When replacing this product, be sure to wear gloves and work safely ●We offer a 30 days money back guarantee from the date of purchase, so you can buy with confidence. Please be aware that there may be scratches at the time of manufacture. *Please note that there may be slight imperfections depending on the production date