Expert Quality, tested to 10kV, suitable for working on live circuits of 1kV AC and 1.5kV 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 10,000V 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 made with SVCM alloy steel blades which are hardened, tempered and chemically blacked. Fully insulated ergonomic soft grip handle with deep set blade sheath for total safety. in blow mould case with see - through lid.