Check the listing for details. Gun Type Power Thread Machine with Clutch Overload Pneumatic Tapping Machine. Condition: New. Listed at 226.53 USD. Tapping material: high-speed: applied to Plastic, wood, rubber, aluminum products. Origin pressure: 5-7mpa. low-speed: applied to Iron, Steel, Aluminum Alloy, Galvanized Steel. Air consumption: 0.37.