Screwdriver, developed according to the Scientific ERGO ™ process. Screwdriver for Phillips screws. Handle: Three component handle for maximum user comfort and power transmission. Indelible colour code on both ends of the handle for easy selection of the right screwdriver. Shaft: alloy quality steel. Chromed and completely hardened. Blade tanned. ISO 8764/DIN 5260. With hexagonal shaft and section for use of a spanner wrench for exerting extra force.