The Stanley 85-721 3 Piece 3/8-Inch Drive 6-Point Professional Grade Spark Plug Socket Set features Max-Drive design, a unique radius corner design which provides 15% more torque, making it easy to tighten fasteners and s...

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The Stanley 85-721 3 Piece 3/8-Inch Drive 6-Point Professional Grade Spark Plug Socket Set features Max-Drive design, a unique radius corner design which provides 15% more torque, making it easy to tighten fasteners and simplifies the turning of rounded corners. Helps reduce fastener wear without contact on outer 5% of fastener, so fasteners last longer. Helps reduce slippage on frozen or rusted fasteners.



  • Stanley Sockets feature our Max-Drive design, a unique radius corner design which provides 15-Percent more torque, making it easy to tighten fasteners and simplifies the turning of rounded corners
  • Helps reduce fastener wear without contact on outer 5-Percent of fastener, so fasteners last longer
  • Helps reduce slippage on frozen or rusted fasteners
  • Limited Lifetime Warranty
  • Stanley Sockets feature our Max-Drive design, a unique radius corner design which provides 15-Percent more torque, making it easy to tighten fasteners and simplifies the turning of rounded corners
  • Helps reduce fastener wear without contact on outer 5-Percent of fastener, so fasteners last longer
  • Helps reduce slippage on frozen or rusted fasteners
  • Limited Lifetime Warranty

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