Step Drill Bit Multifunctional Cobalt Coating High Speed Steel Hex Shank Hole Opening Tool4-12

1、Cobalt coating reduces friction and operating temperatures and extends its life.

2、No need for center punch, not easy to break, can be used for deburring, chamfering and opening

3、High wear resistance, high toughness and high strength flexibility

4、Available in seven styles for choice

5、Widely used for perforating various materials, such as stainless steel tapping steel, wood, thin iron, aluminum alloy, moisture-proof board, PVC board, etc.Item Type: Step Drill Bit

Material: High speed steel

Standard(optional): 3-12, 4-12, 4-20, 4-22, 6-24, 4-32, 6-35.w-e-text table td,.w-e-text table th,.wang-edit-text table td, .wang-edit-text table th{border: .5pt solid #000;};.w-e-text table,.wang-edit-text table{border: 1px solid #000 !important;}

1 x Drill Bit