Air Tapping Arm Maximum Reach 57 in Minimum Reach 22.5 in Maximum Tapping Capacity - Steel 3/8 in Maximum Tapping Capacity - Aluminum 1/2 in Included Tap Holder Sizes Not Applicable Tool Holder Size Size 1 Free Speed 700 RPM Torque 16 ft-lb Air Consumption 24 cfm Number of Speeds 1 Includes Air Preparation Unit with Filter High Torque Reversible Air Motor Pressure Gauge Quick Change Tooling Adapter Regulator and Lubricator Stationary Bench Bracket Vertical Motor Bracket