hss twist drill bit
material:M2, M35, M42, F4341, 9341OR 4341
For drilling carbon and alloy steel, non-ferrous metal.

hss twist drill bit

 surface finishing:bright, black oxide, tin coated, black flute&white shank or rainbow

*hot fully ground flute with special heat treatment gives advanced throughness durability of the drill bit

*black oxide finish for greater resistance to wear

*economic hign speed steel bit for general drilling

*for drilling in steel,cast steel,malleable iron,sintered metal,non-ferrous metal

   feel free to contact us for more detailed information