Copper Plating Chromium,The surface is very bright, zinc finished. Rate for 4500psi/300Bar air-tanks with DIN conections. Fits standard dive tank valve threads. Comes complete with connectors to attach to your paintball tank. May require additional adaptor to be used with certain HPA tanks. The connect Threaded: 29/32-14 UNF Use Stainless steel bleed air valve, more strong! It's weight is 0.260KG made by Copper.