4.2mm Cobalt High Speed Steel Twist Drill Bits HSS-Co 43mm Flute Long x 10 for Stainless Steels

Description

M35 Cobalt High Speed Steel drill bit is designed for stainless steel. The cobalt content is 5%.It provides excellent heat resistance for maximum durability and longer life, having high hardness. It has higher abrasive resistance and lower frictio???? Ò«?????? ?????? ?????? ?????? ?????? ?????? ?????? ?????? ?????? ?????? ?????? ?????? ???????????????§§???????§¦???§±???§º???§Ó???§Þ???§ç???§ñ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????