Innovative interchangeable blades provide ultimate flexibility, compact storage and portability. VDE approved, fully insulated, manufactured and individually certified to EN 60900:2004 Interchangeable insulated blades deep set into handles Draper VDE Interchangeable Blade Screwdriver Set 18 Pieces Expert Quality, tested to 10kV, suitable for working on live circuits of 1kV AC and 1.5kV DC. SCVM steel blades hardened, tempered and chemically blacked. Interchangeable insulated blades deep set into handles - precision or high torque types - for total safety. Mains tester included in set. Supplied in storage roll. PZ TYPE products are compatible with *Pozidriv®/Supadriv® fixing systems. Draper TX-STAR products are compatible with †Torx fixing systems Features and Benefits: Innovative interchangeable blades provide ultimate flexibility, compact storage and portability. VDE approved, fully insulated, manufactured and individually certified to EN 60900:2004 Interchangeable insulated blades