Extending the range to electricians the VDE screwdriver Bit Ste gives all the facilities of a general purpose bit set but is also combined with a Magnetic Driver insulated to 1000v With bits manufactured from Chrome Molybdeum this versatile but set is at home as an industrial tool or sutiable for home electrical use 11 x bits include Phillips Ph 123 Pz Drive Pz 1 Pz 2 Pz 3 Flat 4567mm