Hammer Drive Pin Anchor Anchor Diameter 1/4 in Overall Length 1 1/2 in Thread Size Not Applicable Thread Length Not Applicable Anchor Material Nylon Pin Material Steel Finish Plain Head Type Round Drill Bit Size 1/4 in Minimum Installation Depth 3/4 in Maximum Material Thickness 3/4 in Ultimate Tension Strength (4 000 psi Concrete) 55 lb Pin-Drive Anchor Type Nylon Removable Nail Drive Anchor System of Measurement Inch Compatible Material Block Brick Concrete Masonry