Concrete Anchor Screw Anchor Diameter 1/4 in Overall Length 10 1/2 in Head Type Flat Drive Type Phillips Material Steel Finish Zinc Yellow Material Grade/Class Not Graded Removable Removable Compatible Material Block Brick Concrete Drill Bit Size 11/64 in Screw Anchor Type Concrete Screw Anchor System of Measurement Inch Maximum Ultimate Tension Strength 1 000 lb Minimum Installation Depth 3/4 in Ultimate Tension Strength (4 000 psi Concrete) 1 650 lb Tip Type Pointed