Draper expert insulated plain slot screwdrivers draper expert 46523 expert quality tested to 10kv suitable for working on live circuits of 1kv ac and 15kv dc chrome molybdenum steel blades hardened tempered and chemically blacked fully insulated handle and blade sheath for total safety sold loosemanufactured and individually certified to en 609002004 draper expert 46523 4mm x 100mm insulated plain slot screwdriver