1/2 x 4″ Square HSS Tool Bit • Ground HSS or Cobalt Available • High speed steel (HSS) provides good wear resistance and can be used in general purpose applications for both ferrous and nonferrous materials List Number TO01640 Substrate HSS Package Quantity 1 Length 4" Style Square Diameter 1/2 SKU: TO01640 Category: Tool Bits Related products 5/16 x 4″ Square HSS Tool Bit Item #: TO01340 5/16 x 2-1/2 Square HSS Tool Bit Item #: TO01325 5/8 x 8″ Square HSS Tool Bit Item #: TO01748