Ferrule Crimping Range AWG23-10(0.25-6.0mm²). Each kit comes with a handy ferrule crimping plier (Hexagonal ) with 1640pcs wire ferrules terminals to support small DIY projects and large electrical repairs. Hex Crimp Jaw-Hex crimp profile with six serrated crimp surface. 1640PCS Terminals- Copper terminal Possess good electrical conductivity Smooth product surface treatment- While improving the beauty of the product, the coating on the surface can prevent rust and greatly increase the service life of the product EASY TO USE:- Repetitive, high crimping quality due to integral lock (self-releasing mechanism). Comfortable handle shape and very light.Can be used more easily and conveniently