GearWrench 80314D 47 Piece 1/4" Drive 6 Point SAE/Metric Standard and Deep Socket Set Surface Drive Technology Reduces Fastener Rounding Chamfered Opening to Guide Fastener Into Socket Large Hard-Stamped Size Identification Double Line (SAE) and Knurled (Metric) Ring to Easily Identify Standard vs. Metric Sockets Full Polish Chrome Finish Cleans Easily and Resists Corrosion