Cylinder Bracket Number of Cylinders Held 2 Compatible Cylinder Diameter (Maximum) 12 in Compatible Cylinder Diameter (Minimum) 4 in Cylinder Securing Mechanism Strap with Cinch Buckle Bracket Material Steel Overall Width 24 in Overall Height 2 3/8 in Overall Depth 3 7/8 in Color Gray Finish Powder Coated Mounting Location Vehicle Wall For Use With Gas Cylinder