3Pcs/set 3-12mm 4-12mm 4-20mm HSS Straight Groove Step Drill Bit Titanium Coated Wood Metal Hole Cutter Core Drilling Tools Set
$2,99$9,99 Select options
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3Pcs/set 3-12mm 4-12mm 4-20mm HSS Straight Groove Step Drill Bit Titanium Coated Wood Metal Hole Cutter Core Drilling Tools Set

$2,99$9,99

-50%
3-12 4-12 4-203-12 4-12 4-20 bag3-133PCS BOX4-124-204-22Black 4-12Black 4-20S 4-12 5S 4-12 9S 4-20S Black 4-12S Black 4-20S Sliver 4-12
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For Wholesale and Quotations it takes 1-3 days to get your quote according to the item complexity. The shown price is for reference and may change according to the market.

 

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Features:

Brand New and High Quality

Made from high quality HSS steel

Ideal for using to cut holes in a variety of materials including steel, brass, wood, plastic, etc.

Titanium coated to reduce mit and heat

Heat treated and highly polished. Drills perfectly round holes in steel, brass, plastic, wood etc.

3 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)

Package include:
Type1: 3-12 4-12 4-20 bag
1 x Drill Bit 3-12mm
1 x Drill Bit 4-12mm
1 x Drill Bit 4-20mm
1 x Bag Bag color black blue random

Type2:3-12 4-12 4-20
1 x Drill Bit 3-12mm
1 x Drill Bit 4-12mm
1 x Drill Bit 4-20mm

Type3:4-12
1 x Drill Bit 4-12mm

Type4:4-20
1 x Drill Bit 4-20mm

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, plate thickness within 3MM. Please note that stainless steel and spring steel are not applicable. Not for quenching. (Water injection cooling while working, it can effectively extend the service life of the drill bit, especially in the case of continuous drilling)

Additional information

Brand Name

OIMG

DIY Supplies

Woodworking

Type

Center Drill Bit

Origin

CN(Origin)

Use

Wood Drilling

Model Number

182210864

Certification

NONE

Material

High Carbon Steel

type1

Drill bit

type2

Drill bits for wood

type3

Mini drill

type4

Conical drill

type5

Woodworking

type6

Straight flute step drill

type7

Mini

type8

Conical

type9

Drill holder

type10

Wood Drilling

type11

tools

type12

woodworking tools

type13

Bit for electric screwdriver

type14

Metal drills

type15

Construction tools

type16

Wood cutters

type17

Hammer drill

type18

Step drill bit

type19

Drill bits for wood

type20

Woodworking tools

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