Features and Benefits:�The included pneumatic motor spins at 220 rpm and includes 6 different tap holders.�Another nice feature of the ATM-27-1000 heavy duty industrial articulating arm is that is has an ergonomic design, this is to protect workers from injuries that tend to develop over time during repetitious work.�Air tapping spindle�Work range 3.93" to 39.3"�Slanted arm�Table mount system�1/4", 3/8", 1/2", 5/8", 3/4" and 7/8" tap holders includedTheATM-27-1000 pneumatic tapping armfrom Baileigh industrial is a heavy duty articulating tool support arm designed to provide fingertip control for the most demanding applications. The sturdy cast iron swing arm is connected to the base by means of a hardened and ground shaft that incorporates a leveling system. The twin parallel arms are made of heavy gauge aluminum tubing that is effective at neutralizing vibration and torque reaction.