This is a Wiha Standard Precision Tech Metric Nut Driver. FEATURES: Made from Wiha exclusive CRM-72 (Chrome-vanadium-molybdenum) tool steel. Micron Vapor Chromed for maximum corrosion protection. Exact fit, narrow profile, precision machined tip. Rotating cap for free turning finger control. Fixed blade. Molded on handle with an ergonomic shape for maximum user comfort. Handle size is proportioned to the tip for precise torque to blade ratio. INCLUDES: (1) Nut Driver SPECS: Nut Size: 5.5mm Outer Diameter: 8.0mm Overall Length: 170mm kr4/14/04 ir/jxs