Air Tapping Arm Maximum Reach 33.3 in Minimum Reach 3.9 in Maximum Tapping Capacity - Steel 1 in Maximum Tapping Capacity - Aluminum 1 in Included Tap Holder Sizes 1/4 in 3/8 in 1/2 in 5/8 in 3/4 in 7/8 in Tool Holder Size Not Applicable Free Speed 220 RPM Torque Not Applicable Air Consumption 16 cfm Number of Speeds 1 Includes (6) Tap Holders Air Tapping Spindle Slanted Arm Table Mount System Includes Tap Holder Yes