Expert quality tested to 10k v suitable for working on live circuits of 1k v ac and 15k v dc pliers are drop forged from chrome vanadium steel correctly hardened and tempered with additionally induction hardened cutting edges each of the pliers have been individually tested to 10000v for safe 1000v ac or 1500v dc live line working lacquered finish for corrosion protection with heavy duty fully insulated soft grip handles with slip guards screwdrivers are chrome vanadium steel blades hardened tem