blade: premium hard chrome vanadium steel, entirely hardened and tempered blade chrome plated, blackened tip handle: ergonomic shape three component material hanging hole made according to standard ISO 8764-1,2 made according to standard DIN 5260-PH Ergonomically designed handles The superior quality of materials used in the Unior line of screwdrivers is complemented by ergonomically designed handles to provide an excellent hold. Three-component handle With its combination of soft and hard surfaces, the special, three-component handle a Unior patent ensures comfort and efficient performance with minimum strain on the wrist while working. Slip-proof grip Able to fit a variety of screw profiles and exhibiting innovative three-component handles, UNIOR screwdrivers ensure great efficiency and a slip-proof grip. Profiles Standards ISO 8764-1, 2 Documentation Crosstip (PH) screwdriver TBI - 615TBI