1.I bought this high-pressure tank inflater ten�]odd years ago.

2.Remove a high-pressure tank and a hose. and drilling 2mm.

3.Tapping M5.

4.Make the connecting-bracket which a pressure gauge and a high-pressure tank. The material is beech wood of thickness 10mm.

5.Sanding.

6.Reinforce with an aluminum plate of thickness 1mm so that a beech doesn't break.

7.Connect a speed controller with M5. By 4mm nylon hose, 1/8 inches of one touch tube coupling + socket + pressure gauge.

8.Speed controller.

9.It was complete.

10.Speed controller, tube coupling and pressure gauge are junk items.