.50 Caliber Trailer Hitch Cover: Manufactured from once fired brass and new projectiles. Brass has been tumbled and polished for a great look. Trailer hitch cover backing plate is manufactured from 6061 T-6 aluminum and has a diameter of 5 3/4". Hitch cover backing plate has multiple mounting locations so the projectile can match your manhood. Aluminum parts are Type III hard anodized matte black and UV powder coated. Ordnance is powder coated with clear UV protectant to maintain polished appearance. Steel U shaped mounting bracket fits 2" hitch receivers and is powder coated black.