Concrete Screw, Full Threaded, Measurement System: Imperial, 1/4 in - 14 TPI, 1-3/4 in Length, Steel, Blue ECO Coated, 1-3/4 in Thread Length, #3 Drive, Hi-Low, 0.452 - 0.507 in Head, Quadrex Drive, Concrete Point, Flat Head, 1-1/4 - 1-3/4 in Insertion Size, 2 in Minimum Hole Depth, Standards/Approvals: ASTM B117 Specified, Applications: For wood furring strips, exterior insulation systems, electrical components (clips or boxes), hose reels, lighting fixtures