Features:

• Cobalt coated to lower friction and running temperature, prolong its lifetime.
• Applicable for drilling those workpieces that hardness is higher, such as carbon steel plate, sheet iron, insulation board, etc.
• Full manufactured with CBN grinding, high wear resistance, high toughness, high strength flexural, high machining precision requirement.
• No need center punch, compared with the ordinary twist drill, it is not easy to be break down and it can be used for deburring, chamfering and opening hole.

Specifications:

• Material: M35(HSS-Co)
• Shank shape: Triangle Shank
• Step quantity(steps)     Step diameter(mm)                             Shank Diameter       Weight

001          5                       4,6,8,10,12                                                  6mm                21g                     

004        15                       4,6,8,10,12,14,16,18,20,22,24,26,28,30,32      10mm              176g

Package Included:

• 1x HSS Cobalt Straight Groove Step Drill Bit
• Reference: 15090065001