• 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
• Meets or Exceeds ASME B107.1 and US Federal Spec. GGG-W-641 E
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