Proto 3/8" Alloy Steel Socket with 3/8" Drive Size and Black Oxide Finish

Hand Use Only; Ideal for Use on Stubborn or Damaged Fasteners, and also on Fasteners Made from Soft Materials; The TorquePlus Design is a High Performance Drive Configuration Which Allows for Quick and Easy Socket Engagement to the Fastener Flats, not the Corners; The TorquePlus Configuration Employs a Radius-Corner Design, Shifting Contact Area and Stress Away from the Fastener Corners and Distributing Contact Stresses Over a Large Area of the Socket, Minimizing Slippage; The TorquePlus Internal Design Minimizes Fastener Rounding, Helps to Extend Fastener Life, and Allows the User to More Easily Turn Worn, Rounded, or Rusted Fasteners