3-Piece Step Drill Bit Set HSS Spiral Groove Peeling Drill Drill Cone Drill Metal Drill Drill Set Cut Tool Set for Metal Wood Plastic etc. 4-12mm / 4-20mm / 4-32mm..

【Size】4-12mm/4-20mm/4-32mm. Tapered tip with a step profile which is used to drill 19 hole sizes from 4-32mm to replace 19 individual drill bits. Self-starting, no drilling required.【Material】 Made of high quality HSS (high speed steel) 4241 and coated with titanium for longer life.【Application】 Ideal for cutting holes in various materials including steel, sheet metal, wood, plastic, etc. This drill can meet your needs.【Advantage】Automatically deburr the holes left by other bits because the sharp increase to the next step size allows the cutting edge to scrape off the burrs from the entry surface of the workpiece.Good chip evacuation and even cutting saves time and effort at the same time.【Performance】The length of the unit and the ability to vary the finished hole diameter is an advantage when working with chassis or front panels. The finished hole can often be made particularly smooth and burr-free, especially in plastic.Product Feature:1. No need for pilot drilling2. coated with titanium to reduce friction and operate more smoothly3.The good bit has a 3-sided shaft.4. Automatically deburr holes while you drill, high speed steel, durable.5.Widely used for cutting holes in a variety of materials such as steel, wood, thin iron, aluminum alloy, insulation boards, PVC film, etc. Specification: Color: golden (shown as the picture) Material: high speed steel Surface: titanium coated Scop: thin iron plate, aluminum, insulation boards, 4mm thick PVC boards in wood. Size: From 4 to 12mm 9 steps (4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm), 7cm (L)4 - 20mm 9 steps (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm), 7cm (L)4-32mm 15 steps (4mm, 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, 18 mm, 20 mm, 22 mm, 24 mm, 26 mm, 28 mm, 30 mm, 32 mm), 10 cm (L)Scope of delivery:1 x twist drill 4-12 mm1 x spiral fluted drill 4-20 mm1 x twist drill 4-32 mm

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