Air Hand Tapping Tool, Maximum Tapping Capacity 1/2 in Aluminum, 7/16 in Steel, Included Tap Holder Sizes Not Applicable, Tool Holder Size 1, Free Speed 150 RPM, Horsepower 1/2 hp, Air Consumption 27 cfm, Required Pressure 90 psi, Air Inlet Size 3/8 in, Compatible Hose Diameter 3/8 in, Includes Quick Change Tooling Adapter, Maximum Operating Pressure 100 psi, Reversible Yes, Weight 4 lb