Grating Clip Grating Mount 316 Stainless Steel Finish - Fits Bearing Bar Height 1 to 2 in Fits Bearing Bar Spacing 1 in Fits Support Thickness - Fits Grating Opening Size 1 in For Screw Size 1/2 in Meets/Exceeds ASTM A-240 Includes 1/2 in Threaded Stud Package Quantity 20