Name: STROTON M42 8?? Cobalt Twist Drill Bits (11mm x 2PCS) for Stainless Steel and Hard Metal
SKU: 94WP9Z180B
Availability: InStock

STROTON M42 8?? Cobalt Twist Drill Bits (11mm x 2PCS) for Stainless Steel and Hard Metal

Premium M42 8% Cobalt Steel ,68-70 HRC (Rockwell Hardness Scale) ,Usually Give the Best Heat,Wear and Chip Resistance and Long Tool Life.
3 Steps Desigh for Cutting through Stainless Steel,Hard Metals,Aluminum,Plastic.
This Cobalt Drill Bit is Typically Capable of Running Three to Five Times Faster.Despite the Higher Price,the Cost Per Hole When Using Cobalt Drill Bit Will be the Lowest,Since It Can Produce So Many More Holes.
The Sufficiently Sharp Bit Edge Can Cut the Metal Material into Long Strips of Iron Chips rather than Slowly Grinding Throng the Material with a Blunt Drill Bit.
Includes :M42 Cobalt drill bit 11mm x 2 (length:14.2cm) 135 Degree Split Point

STROTON 11mmx2pcs M42 8% Cobalt Drill Bits

Why choose STROTON cobalt drill bits?

The research shows that HSS with cobalt has a higher temperature resistance and Red hardness, a greater wear resistance(Hardness) and a higher heat treat response than HSS without cobalt .

Red hardness, it causes the hardened steel to have an ability to maintain hardness at approximately 860-880 ??.
Higher Tempering resistance,it means to maintain a high hardness at high temperatures for an extended period of time.
68-70 HRC,it means that the drill bits has 3X cutting ability and 2X durability.


M42 Cobalt 8% Alloy This drill bits set is made of Premium Cobalt (80,000 dollars per ton). Holds up better than generic high-speed steel,8% Cobalt gives high-speed steel more heat and wear resistance.	3 Steps . Design (3X-5X Drilling Efficiency) 3 Steps desigh tip starts drilling immediately with less force and eliminates “walking” across the work surface. Ideal for Stainless steel and Hardmetal,Hardwood,Aluminum,Copper,Plastic and Hardwood.	Ideal for Metal and Hardwood Suitable for drilling Stainless Steel,Hard Metals,Aluminum,Copper,Plastic and Hardwood. The 3 steps design makes it accurately centered for woodworking jobs that require precision drilling. Also, the cobalt-containing design makes it perform even better in hardwood drilling.


The drill bit should be perpendicular to the workpiece when used. Non-vertical use may cause the drill bit to break. Using a drill press with sufficient power will make drilling easier. Do not use the drill bit on a percussion drill. This Drill bit can not be used on glass, walls and concrete.	Controling the drill speed from 200 to 1000 RPM would make it easier for you to drill holes on stainless steel. A high RPM does not improve drilling efficiency, but rather increasesthe heat between the bit and the workpiece, which may cause the bit tosoften and the workpiece to harden. Drill diameter??5mm??RPM??1000~700?? 5-10mm??RPM??700~350?? 10-15mm??RPM??350~200??	Using cutting fluid will make the bit last longer. Add stainless steel tapping oil or engine oil to prevent the stainlesssteel from overheating and forming a very hard oxide layer. It also worksadding some vinegar,soy sauce or water if you don’t have engine oil.


	Metric M42 drill btis(1-10mm/19pcs)	Metric M42 8% Cobalt Drill Bits Independent Packaging of Each Specification	Metric M42 drill btis Titanium Coating(1-10mm/19pcs)	Metric 6% Cobalt Step Drill Bits(4-32mm/15 Steps)
Measurement System	Metric	Metric	Metric	Metric
Cobalt	M42 8%	M42 8%	M42 8%	M35 6%
Titanium Coated			?
Size	1-10mm 19pcs	Small Package	1-10mm 19pcs	4-32mm/15 Steps
Ideal for	Stainless Steel,Hard Metals,Aluminum,Plastic and Hardwood	Stainless Steel,Hard Metals,Aluminum,Plastic and Hardwood	Stainless Steel,Hard Metals,Aluminum,Plastic and Hardwood	??Sheet Metal????Stainless steel , Iron plate, Aluminum,Ducts,Wood,PVC and Plastic
Brand	STROTON	STROTON	STROTON	STROTON
Type	Right Hand	Right Hand	Right Hand	Right Hand

STROTON M42 8?? Cobalt Twist Drill Bits (11mm x 2PCS) for Stainless Steel and Hard Metal

STROTON 11mmx2pcs M42 8% Cobalt Drill Bits

Why choose STROTON cobalt drill bits?

M42 Cobalt 8% Alloy

3 Steps . Design (3X-5X Drilling Efficiency)

Ideal for Metal and Hardwood

The drill bit should be perpendicular to the workpiece when used.

Controling the drill speed from 200 to 1000 RPM would make it easier for you to drill holes on stainless steel.

Using cutting fluid will make the bit last longer.

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