SKU: 43017071573

Bosch CO14B 14-Piece Cobalt M42 Drill Bit Set 8 Percent Alloy for Stainless Steel High Heat Metal Drilling Surface Hardened Tips Plastic Storage Case

Sale price$38.25 Regular price$42.50
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Description

Bosch CO14B 14-Piece Cobalt M42 Drill Bit Set 8 Percent Alloy for Stainless Steel High Heat Metal Drilling Surface Hardened Tips Plastic Storage CaseUltimate Industrial Drilling Performance: Bosch CO14B 14 Piece M42 8% Cobalt Drill Bit Set When your project demands precision drilling through stainless steel, cast iron, or other high tensile abrasive metals, the Bosch CO14B 14 Piece Cobalt M42 Drill Bit Set provides the industrial grade solution you need. Engineered with an upgraded M42 alloy containing 8% cobalt, these bits are specifically designed to withstand the extreme heat generated by

Ultimate Industrial Drilling Performance: Bosch CO14B 14-Piece M42 8% Cobalt Drill Bit Set

When your project demands precision drilling through stainless steel, cast iron, or other high-tensile abrasive metals, the Bosch CO14B 14-Piece Cobalt M42 Drill Bit Set provides the industrial-grade solution you need. Engineered with an upgraded M42 alloy containing 8% cobalt, these bits are specifically designed to withstand the extreme heat generated by drilling into hardened materials. This advanced metallurgy allows the bits to deliver up to 10X longer life than standard high-speed steel bits, making them the gold standard for fabrication shops, automotive repair, and industrial maintenance. The thick web-helix design provides superior structural stability, significantly reducing bit breakage and "walking" when starting a hole in rounded or uneven surfaces.

Precision is built into every bit in this comprehensive fractional set. The surface-hardened tips are optimized to penetrate tough metals with minimal effort, ensuring clean and accurate holes even during extended drilling sessions in high-heat environments. These bits excel in professional applications where failure is not an option, from drilling through thick-gauge steel plates to managing layered composites. The set is housed in a durable, impact-resistant plastic case that keeps your bits organized and protected from jobsite debris. Whether you are a professional fabricator or a dedicated hobbyist, the Bosch CO14B set provides the thermal resilience and cutting edge retention required to handle the most demanding metalworking tasks with clinical efficiency.

Key Features

  • Upgraded M42 Cobalt Alloy: Formulated with 8% cobalt to provide extreme durability and thermal resistance in abrasive metals.
  • 10X Extended Tool Life: Delivers significantly higher longevity compared to standard HSS bits when drilling through hardened steel.
  • Surface-Hardened Tips: Specifically engineered to penetrate tough materials quickly while maintaining a sharp cutting edge.
  • Thick Web-Helix Design: Increases the structural strength of the bit to reduce breakage and enhance stability under heavy loads.
  • High-Heat Resilience: Rated for high-temperature applications, preventing the bit from softening or dulling during continuous use.
  • Professional Range of Sizes: Includes 14 essential fractional sizes to cover the most common industrial and fabrication drilling needs.

What's Included

  • (14) Bosch M42 8% Cobalt Drill Bits (Various Fractional Sizes)
  • (1) Rugged Plastic Storage Case

Specifications

Brand Bosch
Model Number CO14B
Material M42 Cobalt Alloy (8% Cobalt)
Piece Count 14 Pieces
Application Stainless Steel, Cast Iron, High-Heat Metals
Tip Design Surface-Hardened
Helix Style Thick Web Helix
Heat Resistance High-Temperature Rated
Storage Case Durable Plastic
System Compatibility Standard Three-Jaw Drill Chucks

Pro-Tip: When drilling through stainless steel or other hardened metals, always use a slow RPM setting and apply a high-quality cutting fluid or oil. Cobalt bits are designed to cut through hard materials, but keeping the friction-induced heat to a minimum will ensure the M42 alloy maintains its razor-sharp edge for hundreds of additional holes.

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: 43017071573

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4.8 ★★★★★
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DW95
New York, US
★★★★★ 3
Worth it for $12.
Three stars for the progress it made on the lights of our 9 year old car. It works, but it won't look like new. Requires a bit of elbow grease, and it feels like a waste when the wipes run dry pretty fast. You have to keep them folded small (per the instructions) so they don't evaporate too fast, but then you get a tiny cleaning surface area as well. Spoiler alert: They still dry out fast. I wish I'd taken pictures for you because you WILL see a good improvement. Just don't expect brand new look. I'd say we had a maybe 75% improvement, and that combined with the new headlamps we installed made them work great. 4 stars if they want to come back and offer a like 2-4oz bottle of the chemical they use on the wipes and just let me use my own microfiber. That would be great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 31, 2025
D
Verified Purchase
Diane K
Lake Worth, US
★★★★★ 1
Product doesn't work as advertised
This product does not provide enough wipes to remove more than the minimum amount of oxidation. The headlights were starting to yellow, so the oxidation was not severe. We followed the directions on the box to the letter and after using the wipes as directed were left with a sticky residue (which was left-over oxidation that the drying wipes could not remove). I am forced to purchase another box of the product in order to complete the job. I can't drive my car around with the tape protecting the body of the car on it, plus this is Florida so there would be bugs stuck in the tape and the sticky residue. A terrible product. Plus when I called them they said they would send me an email so I can tell them what the problem is and they would give it to their "research" staff to handle. I'm doing that and perhaps they will reimburse me for the second box I will have to get overnighted in order to finish the job.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 18, 2025
L
Verified Purchase
Lissi
Charlottesville, US
★★★★★ 5
Armor All Car Headlight Cleaner Wipes – Quick & Easy Clarity
The Armor All Car Headlight Cleaner Wipes are a convenient and effective solution for restoring foggy, yellowed, or hazy headlights without the need for complicated kits. These pre-moistened wipes make it super easy to wipe away oxidation and dirt, improving visibility and enhancing the car’s overall appearance. ✅ Pros: Quick & Easy to Use: No need for additional tools or sanding. Restores Clarity: Helps reduce haze and oxidation buildup. Convenient Packaging: Portable and easy to store in the car. No Harsh Chemicals or Strong Odors. ⚠️ Cons: May Require Multiple Uses for Heavily Oxidized Headlights. Not a Permanent Fix: Works best for maintenance but may not fully restore very cloudy headlights. Can Leave a Slight Residue: Needs buffing for the best shine. Final Verdict: For a quick fix and easy maintenance, the Armor All Headlight Cleaner Wipes are a great go-to option. They work well for light oxidation and keeping headlights clear, but for severely foggy lights, a full restoration kit may be needed. Great for touch-ups and convenience
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Reviewed in the United States on February 23, 2025
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Verified Purchase
Paco14
Dallas, US
★★★★★ 5
Foggy foggy to crystal clear in less than an hour!!! True story!
Pleasantly surprised at a)how easy this kit was to use, b) the results of the kit and I highly recommend this kit. Took my headlights from completely foggy to crystal clear as if they were brand new. Only took about 30 minutes with a little elbow grease. Great product at a great price!
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Reviewed in the United States on February 1, 2026
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Verified Purchase
Tracy
Houston, US
★★★★★ 2
If you buy it, buy 6 or 7,8 boxes
This is a great product! If you buy 6 to 7 kits! Making it very expensive!!! Once you get started, you can’t stop without buying more kits. It gets worse and worse using any other product. It last a good 8 to 12 month, if you use 7, 8, or 9 kits. It will work the crap out of you, wiping and wiping, scrubbing! Don’t even get started with it, they give you enough of the good stuff to work on a 2 year old car, showing zero signs of oxidation. I’m an Armor All fan! Armor All has the best interior cleaner, a good protectant, & many other good products.. but this product has cost me money and a lot of time. Not happy Armor All.
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Reviewed in the United States on May 6, 2025

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