Long nose: Made from high grade chrome vanadium steel, The cutting edges are induction hardened after individually matching to give high hardness of 55 / 60 HRC which does not get damaged even while cutting hard wires, The rivet is made from carbon steel, prevents play even after considerable long use, Diagonal cutter: Head Material- Hard Carbon Steel, Handle Sleeve Material- Steel with rubber, ACHRO Tools Diagonal Cutting Plier is designed specially for gripping, twisting, bending and cutting wire and cable, Forged carbon steel jaws are fully heat treated for long and superior performance life and durability., Combination plier: Insulated Pliers use drop forged from tested CHROME-VANADIUM steel with high strengh and flexibility. Anti-rust protected. Induction hardened knives and laser heat-treated cutting edges lasts longer.