1. Drop-Forged Carbon Steel, Cr-V Steel, Cr-Ni Steel 2. The surface have Fine finished, Black-plated, Nickel-iron plated. Product Description#Prefessional machine was used to cut the angles of pliers.#Plum blossom rivet was used.#Multiple ways to test the pliers before shipment.Technic:#Drop forged carbon steel#Chrome vanadium#hardened and tempered metal partSize:5"(140MM) 7"(180MM) 9"(220MM) ...