Hammer Drive Pin Anchor Anchor Diameter 1/2 in Overall Length 3 in Anchor Material Steel Finish Zinc Plated Head Type Round Head Height 0.25 in Head Diameter 1 in Drill Bit Size 1/2 in Minimum Installation Depth 2 5/8 in Drive Pin Anchor Type Steel Drive Anchors Compatible Material Concrete Material Grade/Class Heat Treated Removable Permanent System of Measurement Inch Manufacturer Location Globally Sourced Industry Standards UL Listed VFXT. EX1289