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 1″ x 7″ Square HSS Tool Bit Item #: TO01970 1/4 x 8″ Square HSS Tool Bit Item #: TO01231 5/8 x 8″ Square HSS Tool Bit Item #: TO01748