Expert Quality , carbon steel with hardened and tempered jaws Continuous crimping at preset tension ensures accurate crimp Chemically blacked finish with PVC grips Suitable for crimping insulated terminals as follows:- red channel: 0.5-1.00mm², blue channel: 1.5-2.5mm² and yellow channel: 4.0-6.0mm² Supplied with 590 (approx ) mixed pre-insulated terminals in a steel storage case with insert Display packed This is a Draper product.