Blades of PB Swiss Tools special alloy combining maximum hardness with exceptional toughness. Blade screwdriver tips are plane parallel and exactly match the DIN slotted screw sizes. Tips of cross-head blades precisely milled. Chrome-plated, black tips. Power grip with a non-allergenic elastomer surface and a particularly tough impact-resistant polypropylene core to hold different blades, particularly secure grip, even with oily hands.