Manufactured from hardened and tempered Chrome Vanadium steel. Each spanner is fully insulated to VDE and EN 60900 standards to protect from electric shocks up to 1500V DC and 1000V AC. Covers sizes from 7 to 24mm. Ideal for technicians working on modern hybrid and electrical vehicles (1500V DC safe live working). Also suitable for electricians and other trades (1000V AC safe live working). Supplied in storage case.