Machined from 2024T3 aluminum. Gold anodized per specification MIL-A-8625C, Type II for improved corrosion resistance. Length 5-3/4″. Mounting bolt pattern is four equally spaced 1/4″ dia. holes on 1-15/16″ dia. bolt circle. Thread size: 1-1/4 x 16. 3/4″ Mount base thickness Made in USA
