Dual-Spindle Servo 5C System mounted on plate with pneumatic tailstocks. Requires a Haas mill with 4th-axis drive for full 4th-axis operation, or a rotary control box for stand-alone operation. This unit has no collet closing capability as standard. Requires a Haas mill with software version 18.00 or later. Tailstock thrust must not exceed 800 lb (3559 N).