The Draper 8 Piece Engineers/ Mechanics Screwdriver Set has chrome vanadium steel blades hardened, tempered & satin chrome plated finish with sand blasted tips. The handles are manufactured from impact-resistant heavy duty soft grip polypropylene while the colour coding ensures easy recognition. Some blades have hexagon bolsters which enable extra power to be obtained by use of a spanner. Packed in tray with plastic insert.