1-1/4 In. Diameter Medium Duty Clamp Hot-Dipped Galvanized Steel, Chem-Treated G90 Black EPDM Rubber Cushion Manufactured by KMC Stampings 1.25 In. Clamping Diameter 0.281 In. Screw Hole Size 0.5 In. Width 0.048 In. Material Thickness