Professional CATV, electrical, home-theater, satellite and security system crimper is perfect for fast, reliable connector installations. Precision full-cycle ratchet action assures complete precise crimp every cycle. Steel body with black-oxide finish for corrosion resistance and durability. Preset tension for optimum performance. Thumb-screws secure die-sets for quick, easy changes. (Optional Phillips screws available). Safety crimp release helps eliminate rejected terminations due to incorrect positioning. Ratchet mechanism is designed to prevent the release of the connector prior to full compression.