Double Cylinder Wall Bracket, GreyBrackets are constructed of either epoxy powder coated 11-gauge hot rolled steel or type 304 stainless steel to endure the harshest environmentsEdges are protected with steel reinforced vinyl guarding to maintain cylinders and provide extra gripSupport straps are 54" L x 1 1/2" W polypropylene with steel cinch buckle; strength rated at 1200 PSIStainless steel models feature nylon snap buckles to provide durability under the most challenging environmentsWall mount brackets support cylinders from 4" to 12" diameters; bench mount brackets support 4" to 14" diameter cylinders