Concrete Anchor Screw Anchor Diameter 1/4 in Screw Size 1 1/4 in Overall Length 1 1/4 in Thread Length 1 1/2 in Head Type Flat Head Width Not Applicable Head Diameter 0.5 in Head Height 0.19 in Drive Type Phillips Material Steel Finish Stalgard Material Grade/Class Grade SW Removable Removable Compatible Material Block Brick Concrete Wood Drill Bit Size 3/16 in Screw Anchor Type Concrete Screw Anchor System of Measurement Inch Includes Not Applicable