Draper expert 8 piece engineers screwdriver set draper expert 43940 b i expert quality i b professional screwdrivers have chrome vanadium steel blades hardened tempered with satin chrome plated finish and sand blasted tips the generous size handle is manufactured from high quality transparent pvc colour coded handles for easy recognition some blades have hexagon bolsters which enable extra power to be applied by use of an open end spanner packed in blow mould case with display sle