we are in position to supply the gas cylinder caps with size of W80-11, W95-11, 3-1/2 X8, 3-1/2 X11, 3-1/8 X7, 3-1/8 X11, we are in position to supply the gas cylinder caps with size of W80-11, W95-11, 3-1/2 X8, 3-1/2 X11, 3-1/8 X7, 3-1/8 X11, the wall thickness 2.75mm, with or without hex nut, surface plating: blue zinc plating, or plastic powder coating