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#High Speed Steel Step Drill Bits#Metal Wood Hole Drilling#Best Drill For Brick
Spiral step drill
Spiral step drill, also known as step drill or pagoda drill, is mainly used for drilling of thin steel plate within 3mm. One drill bit can replace more than one drill bit. Spiral step drill bit hole can be processed with different diameters as required. Spiral step drill bit HSS and can realize the processing of large holes at one time, without the need to change the drill and drilling positioning holes.
3 years ago
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