It is made up of 304 grade stainless steel, constructed from solid sturdy stainless steel that helps corrosion resistance and provides durability for long term service. IDEAL QUALITY: It is constructed from solid sturdy stainless steel that helps corrosion resistance and provides durability for long-term service. It is very easy to install and remove, polished from the outer surface for maximum corrosion resistance, sleek and compact design with solid construction. DIMENSIONS: Length: 5-5/8 inch /143 mm, Width: 1-1/2 inch /38.1 mm, Thickness: 2 mm. Package Includes:2 pcs of Marine City 304 Grade Stainless Steel Round Side Door Strap Hinges (Screws are not included)