Patented pressure-sensing and auto-retract technologies - intelli-punch accurately detects punch completion and automatically retracts the RAM, preventing damage to punch parts. 360 degree rotating head - rugged, patent-pending swivel design to punch at any angle and time saver- punch faster, with a maximum cycle time of 8 seconds. Compact, ergonomic design - provides easy one-handed operation and an ergonomic tapered grip. Compatible - works with all Greenlee Knockouts and other brands designed for use with a hydraulic tool, not included. Gator eye compatible - with impress software, monitor tool performance - Peak force, number of cycles, etc.