Insulated SoftFinish® Metric Nut Driver. 4.0mm x 125mm. 9.3"/236mm OAL. Blade chrome-vanadium-molybdenum tool steel, hardened. SoftFinish® cushion grip, multi-component handle. Insulation molded directly onto blade. 1000Volt rated. Deep drawn 1" socket.Insulated 1000 Volt Rated Protection Certified, 10,000 Volt tested Each Tool Individually Tested for Insulation Integrity, ISO QualityMeet ASTM F-1505, IEC 900,VDE 0680, NFPA 70EErgo Molded Insulated Cushioned Grips.Handle & Insulation Molded On for maximum durability.Exact Fit Precision Machined Tips.Wiha Special CRM-72 Tool Steel Blades.Super Hardened and Tempered for long life performance.Drivers Precision machined for a perfect fit.Guaranteed Quality Made By Wiha.Wiha uses the same image for many products. Photo may not be exactly as product appears. Please read description carefully.