Grating Clip, G-Clip, Carbon Steel, Finish Galvanized, Fits Bearing Bar Height 1 3/4 in, Fits Bearing Bar Spacing 1 in, Fits Support Thickness 1/4 to 3/4 in, Fits Grating Opening Size 1 in, For Screw Size 1/4 in, Meets/Exceeds ASTM B-695, Includes 1/4 In.-20 Hex Head Cap Screw, Package Quantity 50