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Stanley Proto J7021M 6 Point 3/8" Drive Deep Impact Socket, 21mm

3.5 out of 5 stars 2 customer reviews

Price: $9.22 & FREE Shipping on orders over $25. Details
Only 5 left in stock - order soon.
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  • Proto 6 Point Impact Sockets are ideal for use on stubborn or damaged fasteners, and also on fasteners made from soft materials.
  • Minimizes fastener rounding, helps to extend fastener life
  • The TorquePlus design allows for quick and easy socket engagement to the fastener flats, not the corners
  • Heat treated for the correct balance of strength and hardness.
  • Allows up to 15% more torque to be applied to the fastener
3 new from $8.89

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$9.22 & FREE Shipping on orders over $25. Details Only 5 left in stock - order soon. Ships from and sold by Amazon.com. Gift-wrap available.


Product description

Product description

577-7021M Features: -Chamfered service ends. -Concentric openings. -Applies up to 15% more torque to fastener. -Reduces risk of fastener rounding. Dimensions: Overall Product Weight: -0.48 Pounds.

From the Manufacturer

All Proto impact sockets incorporate the TorquePlus wrenching system. The TorquePlus design is a high performance drive configurationwhich allows for quick and easy socket engagement to the fastener flats, not the corners. The configuration employs a radius-corner design, shifting contact area and stresses over a large area of the socket, minimizing slippage. The internal design of the TorquePlus minimizes fastener rounding, helps to extend fastener life, and allows the user to more easily turn worn, rounded, or rusted fasteners. Proto impact sockets are made from special alloy steel, and are heat treated for the correct balance of strength and hardness, while the one-piece construction ensures their concentricity. Socket wall thickness is optimized to provide maximum strength and ample access to restricted fasteners. Sockets are manufactured to the most up to date industrial specifications, assuring concentric openings, large clearance holes, and tight nut end tolerance.


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on August 17, 2016
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