Proto Socket, 3/8" Drive Size, 9/16" Socket Size, 6-Point, Alloy Steel, Chrome Finish

Ideal for Use on Stubborn or Damaged Fasteners, and also on Fasteners Made from Soft Materials; The TorquePlus Design 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, 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