3 steps drill bit for bi-metal hole saws bit for bi-metal hole saws Material:45 #( or upon your request) Size:1/4"*4" hss

DF01030 drill points  for bi-metal hole

 we have many kinds of this product,and all of them had adopted ISO9001:2000 Quality System Authorities.

 

 

3 steps drill bit for bi-metal hole saws