Feature

●Set Includes: 0.2 - 1.0 inch (6 - 25 mm) spiral step drill, Number of Steps: 10 (6, 8, 10, 12, 14, 16, 18, 20, 22, 25 mm)
●HSS steel (high speed steel) step drill is coated with titanium on the surface to reduce the heat produced during friction, and operate at lower temperatures
●The spiral groove design reduces pressure during cutting and improves the discharge of debris
●The step drill extends the holes in order from small to large holes, allowing for multiple sizes of drilling and enlarging holes
●Applicable Scope: An essential tool for drilling stainless steel, aluminum plates, wood, thin iron plates, vinyl and resin, household DIY, enlarging the lower hole, chamfering, deburring, etc

Description