Solid Cast Iron with pre-drilled holes for easy installation Offset is 3 3/8" Dimensions: 3 3/8" x 2 1/2" x 3 1/4" Screws NOT included Heavy Duty Cast Iron handrail brackets for wood or metal railing, staircases wall mounted railing bracket. Easy to install all you need is a driller and a screwdriver. No welding required. Comes unfinished, to be painted your desired color. Dimensions: 3 3/8" x 2 1/2" x 3 1/4"