MTM Hydro's Stainless Steel Garden Hose QC Kit upgrades your cleaning experience as a rust free option that is also chemically resistant. These Stainless Garden Hose fittings were originally developed for the U.S. food production industry but were opened up to the public a few years ago when demand surged for premium fittings. The specialized Stainless Garden Hose Coupler has 6 stainless locking balls and firm spring collar to fully engage the Stainless Garden Hose Plug and eliminate the risk of bumping against another object and disconnecting. This kit comes with One Coupler for your hose outlet and three plugs that can be used for various accessories, whether that be for your Garden Hose Spray Gun, Watering Wand and so for, which allows the flexibility you will need on your jobs!