30pcs twist drill set with titanium coated
material:hign speed steel
for drilling in steel,cast steel,malleable iron etc.

  30pcs twist drill set with titanium coated

 *hot fully ground flute with special heat treatment gives advabced throughness with incresed

durability of the drill bit

 *economic hign speed steel bit for general drilling

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

 other normal package is avaliable on your request!