3pcs HSS Spiral Groove Peeling Drill Bit Set Cone Drill Metal Drill Bit 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 that 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 titanium coated 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 holes left by other bits as the sharp increase to the next step size allows the cutting edge to scrape burrs from the workpiece entry surface. Good chip evacuation and even cutting save 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 drilling
2. Titanium coated to reduce friction and run more smoothly
3. The good bit has a 3-sided shaft.
4. Automatically deburr holes as 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 board, PVC film, etc.

Specification:
Color: Golden (shown as the picture)
Material: High speed steel
Surface: Titanium coated
Scop: Thin iron plate, aluminum, insulation board, 4mm thick PVC board in wood.

Size:
From 4 to 12mm 9 steps (4 mm, 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 (4 mm, 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 mm
1 x fluted drill bit spiral 4-20 mm
1 x 4-32mm Twist Drill Bit