The XS Scuba Highland Stainless Steel Single Tank Adapter has a polished #4 stainless steel finish, with the final finish polished by hand. Measuring at 14 gauge (.074in) 304 grade stainless steel. Allows for a stable mounting of single cylinder to backplate. Attaches to sing cylinder with the addition of two cam bands. Center to center distance of 11in. This product will include all necessary hardware.