Our 6pc inert gas quick connect set is ideal for backpurging jigs and more, allowing you to quickly switch between tools. The male nipples have a 1/8" MNPT connection, and the couplers are 1/8" FNPT. Includes 5 male nipples and 1 female coupler for your hose end. Backed by our rock-solid 2 year warranty against manufacturing defects. We are based out of Denver, CO and offer customer service and support via phone, text, and e-mail.