Pico 7527PT 2-1/2" ID Rubber Insulated Clamps 5/8" Zinc Plated Steel with 3/8" Mounting Hole 2 per Package 2-1/2" Inside Diameter When Closed 5/8" Wide Zinc Plated Steel Clamp 3/8" Mounting Hole Flexible Neoprene Cushion 2 per Package