6 Fittings and Accessories for Industrial and Medical Compressed Gas Storage, Dispensing and Distribution Systems-Namely, Hose Braces, Clamps, Hose Couplers, Hose Ferrules, Nuts, Nipples, Tees, Plugs and Caps, Adapters and Splicers, Bushings, "Y" Connections, Manifold Blocks and Resilient Metal Tubing Loops, All Made Primarily of Metal