ARMSTRONG 39-311 1/2" Drive 11mm Deep Socket 12pt. USA

​ARMSTRONG 39-311 1/2" Drive 11mm Deep Socket 12pt. USA

• Radius Corner Design Engages the Flats of the Fastener, Not the Corners, Providing Up to 15% -20% More Torque While Reducing Fastener Rounding, Enhancing the Turning of Worn Fasteners
• EYE-D(TM) Markings Optimize Size Visibility, Also Providing SAE / Metric Differentiation
• Unique Socket Retention Method, Cold Form Ball Recess, Provides Consistent Secure Retention of the Socket to the Drive Tool Eliminating the Possibility of Either a Loose Fit or Tight Fit
• Socket Wall Dimensions are Optimized to Provide Strength While Retaining Access to Restricted Fasteners

Aeronca x 6 1428 truck4