The MILWAUKEE RED HELIX Cobalt 5/64 in. Drill Bit are engineered for extreme durability and longer life in hard metal applications. The Milwaukee Cobalt drill bits are designed with a VARIABLE HELIX that includes an aggressive 35° Helix Angle which ends at 15°. The 135° split point tip delivers a precision start and prevents walking for fast, accurate holes in Hard Metal, PVC and wood.The tapered drill bits feature a new ENHANCED TAPERED WEB that strengthens the bit’s core to increase flute durability. The cobalt twist drill bits are ideal for tough applications, providing up to 15X life vs. Black Oxide Drill Bits.
- Cobalt alloy for up to 15x life vs. black oxide drill bits
- ENHANCED TAPERED WEB strengthens the bits core
- VARIABLE HELIX Design for rapid material extraction
- 3-Flat Secure-Grip helps keep the bit fixed within the the chuck
- Designed for Hard Metals, PVC and Wood
Keira McLaughlin (verified owner) –
These cobalt drill bits last longer than standard black oxide or those gimmicky titanium coated ones do.
Creola Howe (verified owner) –
Used this to drill through a locked door in my home that didn’t have a key. I used a normal drill bit for 30 minutes to no avail on the anti-drill insert. This drill bit got through in less than a minute.
Afton Ullrich (verified owner) –
I have doors that are made from recycled wood. I tried to drill holes through the door with a cheap-o drill bit I had and it took over 10 minutes to get one hole drilled. I bought this drill bit, and it turned that time into 10 seconds per hole. I wish I had purchased this before making the first hole.
Bryana Labadie (verified owner) –
Stays sharp, nice bit…well worth the price
Shane Jakubowski (verified owner) –
the drill bit is a little expensive but it performs very well
Katelynn Veum (verified owner) –
It worked exactly the way I wanted
Maximillia Mosciski (verified owner) –
They are the only bits I buy. They don’t clog up and stay sharp
Enos Cremin (verified owner) –
Great bit. Very sharp. Went thru the wood like butter. Had some issues with the metal plate behind it, but it eventually penetrated it also.
Donny Quigley (verified owner) –
The best type of drill bit I use to work on stainless steel, the only bad point about them is that they are very fragile and break at the first mistake made during a manual drilling operation, but using correctly , they are the best!
Mikayla Haley (verified owner) –
is the most powerfull bit, for use on steel
Amelie Cummings (verified owner) –
They are really hard steel to work on hard to bore metals. Good stuff
Bette Lockman (verified owner) –
This drill bit worked great in my Hitachi drill.
Anita Wisozk (verified owner) –
The cobalt bit drills stainless steel well. The Milwaukee brand performs much better than the competition.
Destany Russel (verified owner) –
Used it to drill holes through 4 corners of metal rail section. Worked well. No problems.
Lilliana Hyatt (verified owner) –
bought this to drill a hole into an Elfa support bracket. Took a little time, but the bit didn’t overheat or break.
Sid Lowe (verified owner) –
Really? You want me to review a drill bit? Umm, it put a hole in the material I wanted so I guess it was at least good.
Arnaldo Cronin (verified owner) –
These are the best bits I have ever used. They last through many uses on heavy steel. (I recommend going slow, and putting a drop of oil on the tip every 30-60 seconds.) I used this bit to drill 10 holes thru 1/4” steel, then thru a bunch of rivets, and it is still sharp!
Johanna Batz (verified owner) –
It successfully completed the task that i had purchased it for.
Sallie McDermott (verified owner) –
Broke off an exhaust bolt and had to drill it out. (in place) Bought the 3/16 Cobalt as my starter size and also the appropriate size called for, to tap out the threads. I was surprised how easily these bits drilled through the old steal bolt.
Justyn Champlin (verified owner) –
Item in great shape out of the container. Very sharp, definitely straight, and superb craftsmanship. Cut right through steel, wood and almost anything else you might desire. Excellent drill bit.