Oatey Stand-Off Half Clamps with Nails provide fast and easy installation for all types of copper tube size (CTS) piping. Stand-Off Half Clamps with Nails eliminate contact between the pipe and framing surface and insulate against sound. Stand-Off Half Clamps with Nails can be used with hydronic heating systems and are available in , and 1 sizes. STAND-OFF HALF CLAMPS WITH NAILS PRODUCT