13 PCS Metric M35 Cobalt Steel Twist Drill Bit Set HSS Extremely Heat Resistant with Straight Shank to Cut Through Hard Metals Like A Hot Knife Through Butter,Such as Stainless Steel,Titanium Alloy

13 PCS Metric M35 Cobalt Steel Twist Drill Bit Set HSS Extremely Heat Resistant with Straight Shank to Cut Through Hard Metals Like A Hot Knife Through Butter,Such as Stainless Steel,Titanium Alloy

$ 13.99

Score By Feature

Based on 168 ratings

Value for money

7.98

Durability

7.07

Longevity

7.06

OveReview Final Score

How Our Score Is Calculated

Product Description

A Twist Drill Bit HSS is manufactured from a hardened alloy that has a Rockwell hardness of 67, giving it extra cutting speed and an extra-longer life span, by up to 12 times compared with usual HSS drill bits.

There is no need to punch a center hole with the 135° Quick-Cut points. They are self-centering and penetrate quickly with little force. Will not wander or "walk" when used with the twist drill bit kit

Exceptional resistance to heat - twist drill bits must be used at a speed of 1500 RPM or greater to be efficient. Easily adjusts to drill chucks and regular round collet chucks due to the straight shank, providing a secure hold and accurate centering

Steel, stainless steel, hard metal and iron drilling is a type of metal cutting. The knives are particularly effective at cutting through hard metals such as hard metal, stainless steel and cast iron, but softer metals can also be cut by them.

-Excellent for easy usage and storage all 13 pieces of the M35 cobalt steel twist drill bits come in this set There are five, two, and two millimeters. Five millimeters, three millimeters, three millimeters. A bit over 2mm and a bit under 3mm. There are five, four, and four millimeters. The sphere measures 5mm by 4mm. A 8mm, 5mm, and a 5mm drill bit. There are five mm, six mm, and six mm. Pack of 13 5mm x 13pcs in a plastic bag for easy storage and easy use

Questions & Answers

What type of Dremel do these fit?

The drill bits are intended for use with standard drills. You might be able to use some smaller ones if you have the adjustable chuck attachment, but otherwise they will not fit.

Have you used these on steel with an AR500 rating? Would you mind sharing your thoughts on a 3/4" hardened steel plate? Before I invest in a $200 dollar drill set, my curiousity just needs to be satisfied. ?

As of now, I've only used them on 3/4 steel ar500, but I haven't used them on 6 1/4 steel ar500. In my experience, however, they worked well for the task I used them for.

How well does it work with a rotary tool such as a dremel?

You might be able to use some of the smaller ones if you have an adjustable chuck attachment, but otherwise, the smaller ones wouldn't work. They are either Currently, Dremels have only two shaft sizes (Dremels are made to use only two

Selected User Reviews For 13 PCS Metric M35 Cobalt Steel Twist Drill Bit Set HSS Extremely Heat Resistant with Straight Shank to Cut Through Hard Metals Like A Hot Knife Through Butter,Such as Stainless Steel,Titanium Alloy

Hardened bolts can be worked on

5/5

My drill was broken and I had to drill out the broken part Having a 12mm hardened bolt up close on my Honda Odyssey, I thought these would be a really hard, cobalt steel bolt and would not wander excessively without center punching. My needs were exactly met by these It was easy to center the drill and keep it in the center of the bolt, even considering the awkward position. The drill entered the hardened M10 bit with relative ease. It was the x bolt which I was The first use of these drill bits has made this investment more than worthwhile, and I now have a whole set at the ready whenever I need something more than the junk drill bits found at the local home improvement.

Santos Livingston

| Jun 05, 2021

It works great

5/5

When you spin it, the pointed end makes a hole. In my case, I needed metric bits. These were the best price on Amazon at the time, no matter what material was used. Cobolt bits are not my favorite because I can't sharpen them, but these are mostly for 3D prints, brass, and aluminum, so I guess I'm not in a rush to buy them This is great news, since I was looking forward metric conversions for a long time.

Liliana Oliver

| Nov 24, 2020

This is the first time I have heard of drill bits having such poor quality

3/5

It is one of the most frustrating experiences I have ever had with drill bits. Despite my low expectations, these failed to live up to them. In order to drill 6 6mm holes through 3/32” stainless steel, I had to drill 6 6mm holes per leg. After barely making the first hole, I decided not to try again. My drill press was set to the correct speed, I had drilled a pilot hole (not the same set), I used cutting oil. There was nothing good about it. My goal was to drill the second hole, so I basically friction drilled it. Four of the remaining five did not occur. These bits are so terrible that there are no words in the English language that can describe them adequately. There is too much credit given to 1 Star. *Click here* *Click here* I don't want to sound negative or angry, nor was I angry when they didn't We couldn't be angry because of their poor performance because it was too puzzling. This is the first time I have heard of drill bits having such poor quality.

Andi Carey

| Oct 07, 2020

I like it

5/5

Thanks for a great product that is very durable.

Royal Terrell

| Mar 10, 2021

Drilling steel is no problem with these! Other low-cost alternatives do not offer as many features Despite the low cost (garbage) of these drill bits, they are tough enough to drill into steel without a problem

5/5

Purchasing this product was a good decision.

Gwen Ward

| Jun 24, 2021

It is only suitable for very light duty

3/5

This is what I purchased because I needed four drills to drill two holes. Make holes of 5 mm in two blocks of aluminum. Because the holes were only a centimeter deep and the metal was relatively soft, I didn't expect too much force to be placed on the bits. For extra caution, I used a stout drill press and lubricant. I also repeatedly backed out to clear A drill bit snapped off inside the fourth hole it was drilled with an adjustable bit. There is a block that needs to be replaced and a drill bit that needs to be purchased. There is no value for money in this game.