5 Inch Flat Blocks w/ 9/16 Inch Pin Zone OffroadThese high quality 5 inch cast iron lift blocks are specially designed to lift the rear of leaf spring trucks. They come finished in a black e coating and are flat (non tapered). Uses 9 16 inch pin size. Sold in pairs. Features: Black powder coating Blocks are sold in pairs Cast in the USA CNC machined for proper pin placement Standard 9 16 inch male pins with 5 8 inch female Specs: Height: 5 inch Lift Height: 5 inch Material: Cast Iron Type: Single