Hammer Drive Pin Anchor Anchor Diameter 1/4 in Overall Length 1 3/4 in Anchor Material Steel Finish Zinc Plated Head Height 0.625 in Head Diameter 0.5 in Drill Bit Size 1/4 in Minimum Installation Depth 1 1/8 in Drive Pin Anchor Type Tie Wire 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 Material Quality Standards ASTM E488