Professional Quality, tested to 10, 000V & insulated to 1000V AC & 1500V DC for live line working. Manufactured from chrome vanadium electric steel, oil hardened & tempered. Smoothly ground heads with cutting edges separately induction hardened to 64HRC for cutting piano, hard & soft wires. The cutter has no conventional centre rivet, but a forged-on pivot which can withstand extra leverage. Heavy insulated handles with slip guards for extra comfort & safety.