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3 pcs Set Drill Bit HSS Step Cone Taper Hole Cutter Metric 4-32mm Titanium Coated Metal Hex drill сверло ступенчатое сверла
3 pcs Set Drill Bit HSS Step Cone Taper Hole Cutter Metric 4-32mm Titanium Coated Metal Hex drill сверло ступенчатое сверла
3 pcs Set Drill Bit HSS Step Cone Taper Hole Cutter Metric 4-32mm Titanium Coated Metal Hex drill сверло ступенчатое сверла
3 pcs Set Drill Bit HSS Step Cone Taper Hole Cutter Metric 4-32mm Titanium Coated Metal Hex drill сверло ступенчатое сверла
3 pcs Set Drill Bit HSS Step Cone Taper Hole Cutter Metric 4-32mm Titanium Coated Metal Hex drill сверло ступенчатое сверла
3 pcs Set Drill Bit HSS Step Cone Taper Hole Cutter Metric 4-32mm Titanium Coated Metal Hex drill сверло ступенчатое сверла
3 pcs Set Drill Bit HSS Step Cone Taper Hole Cutter Metric 4-32mm Titanium Coated Metal Hex drill сверло ступенчатое сверла
3 pcs Set Drill Bit HSS Step Cone Taper Hole Cutter Metric 4-32mm Titanium Coated Metal Hex drill сверло ступенчатое сверла
3 pcs Set Drill Bit HSS Step Cone Taper Hole Cutter Metric 4-32mm Titanium Coated Metal Hex drill сверло ступенчатое сверла
3 pcs Set Drill Bit HSS Step Cone Taper Hole Cutter Metric 4-32mm Titanium Coated Metal Hex drill сверло ступенчатое сверла
3 pcs Set Drill Bit HSS Step Cone Taper Hole Cutter Metric 4-32mm Titanium Coated Metal Hex drill сверло ступенчатое сверла
3 pcs Set Drill Bit HSS Step Cone Taper Hole Cutter Metric 4-32mm Titanium Coated Metal Hex drill сверло ступенчатое сверла

3 pcs Set Drill Bit HSS Step Cone Taper Hole Cutter Metric 4-32mm Titanium Coated Metal Hex drill сверло ступенчатое сверла

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100% Brand New and High Quality
Made from high quality HSS steel
Ideal for using to cut holes in a variety of materials including brass, wood, plastic, etc.
3Pcs Hss Drill Bit Set, quality tool for jobs of all sizes
Titanium coated to reduce heat
Heat treated and highly polished. Drills perfectly round holes in steel, brass, plastic, wood etc.
6 sided shanks design in order to prevent slippage when in chuck
Two flute design drives faster, smoother and cleaner cuts each step is clearly labeled with the depth diameter in steps

Function: Deburring, Chamfering, Cutting or expanding holes
Supporting tools: Pistol drill, Hand drill, Charging drill, Bench drill. (Water injection cooling while working, it can effectively extend the service life of the drill bit, especially in the case of continuous drilling)
Rotating speed:
4-12 speed:260-400
4-20 speed:180-240
4-32 speed:90-160

Attention:Because of the outer diameter of each step of the step drill is gradually expanded,then the corresponding cutting resistance and linear velocity will also be gradually increased.
Owing to the step drill is completely dependent on the inclined edge that is only with 1mm length,If the feed speed is too fast when drilling,it will be easily to be annealing caused by abrasion of the oblique edge.
Please give a downward force when drilling, do not press down too hard to avoid the edge wearing.

Suitable material: Workpieces with general hardness, such as wood, plastic, PVC plate, iron plate thickness within 3MM. Please note that stainless steel and spring steel are not applicable. Not for quenching.

Length:
4-12mm Length: Approx. 6.5cm/ 2.56″
4-20mm Length: Approx. 7.7cm/ 3.0″
4-32mm Length: Approx. 10.0cm/ 3.94″
4-42mm Length: Approx. 98.5cm/ 3.8inch
Round handle diameter: 10mm
Hexagonal handle diameter: 6.35mm

Sizes:
4-42MM (4mm,6mm,9mm,12mm,15mm,18mm,21mm,24mm,27mm,30mm,33mm,36mm,39mm,42mm) 14 steps
4-32mm :(4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 32mm) 15 Steps
4-20mm:( 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm)9 Steps
4-12mm: (4mm,5mm, 6mm,7mm, 8mm, 9mm,10mm, 11mm,12mm) 9 Steps

Package include:
1 x Drill Bit Hexagonal handle 3-12mm
1 x Drill Bit Hexagonal handle 4-12mm
1 x Drill Bit Hexagonal handle 4-20mm
or
Package include:
1 x Drill Bit Hexagonal handle 4-12mm
1 x Drill Bit Hexagonal handle 4-20mm
1 x Drill Bit Hexagonal handle 4-32mm
1x Bag
or
Package include:
1 x Drill Bit Hexagonal handle 4-32mm
or
Package include:
1 x Drill Bit Round handle 4-42mm

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