These are Genuine PlasmaDyn® Replacement Parts skip the cheapo chinese junk... Includes: 1 x 020218 Retaining Cap fits Hypertherm® Powermax 350 & 380, Max20 PAC110, Century, Solar using PAC110 Plasma Torches We have other parts Powermax 350 & 380 Parts AVAILABLE HERE Part Number compatibility is for reference only Please make sure this part number fits your torch