Wiha 46718 - 3K Hex Ball End Driver 3/16 x 100mm. Blades of CVM special steel, hardened, black finish. Molded on Wiha-3K Ergo soft grip handles.
CVM or Chrome-Vanadium-Molybdenum steel is a special, high strength, high performance alloy. Chromium improves wear resistance, hardness and corrosion resistance. Vanadium also improves the grain structure for a tougher tool. Molybdenum improves impact resistance as well as increases tensile strength and elasticity to prevent tool breakage and snapping.
WARNING: Cancer and Reproductive Harm—www.P65Warnings.ca.gov