Introduce Step drill bits of Danyang Ergaster Tools Co.,Ltd.
Introduce Step drill bits of Danyang Ergaster Tools Co.,Ltd.
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Our Contact information:yun@
Whatsapp No.: 0086 1333 8816 565
We manufacturer of hss step drills.
What is the specification of step drills?
Used for workpiece circular aperture chamfering or cone hole, the edges on the surface of the chamfering processing.
Ideal for cutting through metal, wood and plastic.
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