SKU: 52528542955

Milwaukee RED HELIX Cobalt Twist Drill Bit, 3/8 in. Diameter, 5 in. Length

Sale price$13.92 Regular price$15.47
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Description

Milwaukee RED HELIX Cobalt Twist Drill Bit, 3/8 in. Diameter, 5 in. Length3 8 in. Cobalt Twist Drill Bit for Hard Metals Milwaukees RED HELIX cobalt twist drill bit is engineered for extreme durability and fast drilling in hard metals. A QuadEdge tip and variable helix design improve chip removal and reduce heat, while a thicker tapered web boosts strength for longer life versus black oxide bits. Key Features: Durable Cobalt Construction: Up to 15x life vs. black oxide bits in hard metals Precision Starts: 135 split point

3/8 in. Cobalt Twist Drill Bit for Hard Metals

Milwaukee’s RED HELIX cobalt twist drill bit is engineered for extreme durability and fast drilling in hard metals. A QuadEdge tip and variable helix design improve chip removal and reduce heat, while a thicker tapered web boosts strength for longer life versus black oxide bits.


Key Features:

  • Durable Cobalt Construction: Up to 15x life vs. black oxide bits in hard metals
  • Precision Starts: 135° split point reduces walking for cleaner holes
  • Variable Helix Flutes: 35°–15° geometry accelerates material extraction
  • QuadEdge Tip: Stays sharper longer and drills faster with less heat
  • Secure 3-Flat Shank: Prevents bit slipping in the chuck for better control

Specifications Table:

Specification Details
Bit Material Cobalt
Drill Bit Type Twist
Drill Bit Type(s) Included Twist
Individual/Set Individual
Number of Pieces 1
Pack Size 1
Material Application Aluminum, Cast Iron, Duct/Sheet Metal, Stainless Steel, Steel
Tools Product Type Power Tool
Shank Style 3-Flat
Shank Diameter 3/8 in
Bit Diameter 3/8 in
Bit Length (in.) 5
Item Weight 0.1 lb
Drilling Depth (in) 3.74
Returnable 180-Day
Features QuadEdge tip, Variable Helix design, Enhanced tapered web, 135° split point

Frequently Asked Questions (FAQ):

Q: What materials can this bit drill?
A: Designed for aluminum, cast iron, duct/sheet metal, stainless steel, steel, PVC, wood, and more.


Q: What is the shank style?
A: 3-Flat Secure-Grip shank to reduce slipping in the chuck.


Q: What are the dimensions?
A: Bit diameter is 3/8 in.; overall length is 5 in.; shank diameter is 3/8 in.


Q: Is this sold as a single bit or a set?
A: Individual bit (pack size: 1).


Q: Will it work with standard drill/drivers?
A: Yes, it’s compatible with all drill/drivers.


Industrial Precision, Elevated

This sleek cobalt bit brings a refined, hardworking edge to workshop essentials, turning metalwork into a crisp, confident act. The variable helix fluting is a standout, channeling chips away with sculptural ease for smoother, faster holes. Pair it with a brushed-steel drill/driver and a clean pegboard wall to create a purposeful, modern workspace. It’s a small luxury of performance—precise, enduring, and indispensable.


Upgrade your drill kit with Milwaukee’s RED HELIX cobalt bit for faster, longer-lasting performance in hard metals.

Warranty

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 52528542955

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Greg from MidW
Draper, US
★★★★★ 3
Does the job but dangerous to walk with!
Does the job but dangerous to walk with: foot is sliding inside the sock if the foot was treated with cream or lotion prior. It is uncomfortable to sleep with but a necessary hurdle to heal your heels!
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Reviewed in the United States on December 24, 2025
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Texgurl
Pawtucket, US
★★★★★ 4
Does the trick
Bought it with urea cream for my senior dad who was diabetes. Careful with it, it will tear
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Reviewed in the United States on April 6, 2026
A
Verified Purchase
Amazon Customer
Pawtucket, US
★★★★★ 5
The really work!
Bought these or a friend with severely dry cracked feet. The change was significant and immediate. They wore them around the house for a day and that night they could already feel the difference.
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Reviewed in the United States on January 12, 2026
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Lina
Natrona Heights, US
★★★★★ 5
Fabulously bizarre and effective
These silicone socks have to be the strangest item I have ever ordered from Amazon. However strange they are, I was pleasantly surprised with them. My order came with two pairs, and I took one pair out to wash before use. I laughed at handling them then because they were a cross between hospital socks and leftover mannequin skin…trippy. The socks dried fast, so I put on foot lotion and put the socks on. The socks are beige skin tones that cover the entire foot up to the ankle, basically booties. The silicone is very soft and makes putting on and taking off the socks easy. They are also surprisingly easy to walk around in because the bottoms have grips, again, like hospital socks. I walked on tile, hardwood, and carpet with no slipping. The booties also stayed in place with no issues. I was concerned my feet would sweat, but that didn't happen. I was able to wear them for 3 hours without sweaty feet. When I took them off, my feet were a lot more soft than before or if I had used regular socks. For reference, my feet are not terrible, but the skin around my toes is dry and peeling from my picking(gross, I know). The socks I got are a size large, which worried me because they are big, but the site said for my shoe size (9) that's what I should order, and they were right. They are the perfect size and stretchy for room. I can't believe how cool and well-thought-out these socks are, on top of working. Honestly, these are among the top 20 favorite items I've ordered from Amazon. They may look incredibly strange, and they are, but they work wonders.
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Reviewed in the United States on June 5, 2025
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Amazon Customer
Boise, US
★★★★★ 3
Not well made
I have used these for 2 weeks now and one of them has a hole in the sole... I won't ever buy them again
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Reviewed in the United States on July 15, 2025

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