This heavy duty ratchet crimping tool is manufactured from quality carbon steel and fitted with hardened and tempered jaws. The tool features a chemically blackened finish for improved corrosion resistance and heavy duty PVC handles to provide operator comfort. Crimping pressure is precisely adjustable and a ratchet release lever is fitted to enhance safety. Has easy identification for crimping Red, Blue, and Yellow Terminals. Suitable for crimping insulated terminals from 0.5mm to 6.0mm in size.