Pipe Clamp, Bolt Material Electro-Galvanized Steel, Cushion Material EPDM Rubber, Cushioned Yes, For Copper Tube Size 4 in, For Maximum Outside Diameter 4 3/16 in, For Pipe Size 3 1/2 in, For Threaded Rod Size 3/8 in, Hanger Material Steel, Hanger Material Finish Electro-Galvanized, Hanger Type Swivel Loop, Load Capacity 300 lb