Description
Product Advantages:
(1) 3 Steps desigh tip starts drilling immediately with less force and removes “walking” across the work surface.
(2) Holds up better than generic high-speed steel,Cobalt gives high-speed steel more heat and wear resistance.
(3) This drill bits set is made of Premium Cobalt (80,000 dollars per ton).
(4) The M42 metric cobalt drill bits can cut through Stainless steel and Hard metal,Hard wood, even supposing they may be able to be used for softer materials such as Aluminum,Plastic.
Some Important Tips about drilling stainless steel and hard metal:
(1)Controling the drill speed from 200 to 1000 RPM would make it easier so that you can drill holes on stainless steel.
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Stainless Steel
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Drill diameter RPM
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≤5mm 1000~700
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5-10mm 700~350
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10-15mm 350~200
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(2)Add stainless steel tapping oil or engine oil to prevent the stainless steel from overheating and forming a very hard oxide layer.It also works adding some vinegar,soy sauce or water if you shouldn’t have engine oil.
Make sure this fits by entering your model number.
Premium M42 8% Cobalt Steel ,68-70 HRC (Rockwell Hardness Scale) ,On a regular basis 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 Usually Capable of Running Three to Five Times Faster.Despite the Higher Price,the Cost Per Hole When The usage of Cobalt Drill Bit Would 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 moderately than Slowly Grinding Throng the Material with a Blunt Drill Bit.
19Pcs 135 Degree Split Point Drill Bits Includes :1mm(length:3.4cm)1.5mm2mm2.5mm3mm3.5mm4mm4.5mm5mm(length:8.5cm)5.5mm6mm(length:9cm)6.5mm7mm7.5mm8mm(length:11.5cm)8.5mm9mm9.5mm10mm(length:13cm) [DIA 0.5mm Increments] .
