Draper 64696 expert ergo plus 4 piece vde screwdriver set4 piece vde screwdriver set each individual screwdriver is tested to ensure it fulfils the en 60900 requirements the en 60900 requirements compel all tools to be tested to 10k v making them suitable for working on live ac circuits of up to 1k v and dc circuits of up to 15k v the blades on the screwdrivers are manufactured from svcm alloy steel hardened tempered and chemically blackened with a deep set blade sheath providing total safety an