Draper expert 4 piece fully insulated screwdriver set draper expert 69233 b i expert quality i b tested to 10kv suitable for working on live circuits of 1kv ac and 1 5kv dc chrome vanadium steel blades hardened tempered and chemically blacked fully insulated ergonomic soft grip handle with deep set blade sheath for total safety display packed br br b manufactured and individually certified to en 60900 2004 b br br pz type products are compatible with pozidriv 174 supadriv