--- product_id: 145184278 title: "BOSCH CO14B 14-Piece Cobalt Drill Bit Set with Case" brand: "bosch" price: "NZ$105" currency: NZD in_stock: true reviews_count: 13 category: "Bosch" url: https://www.desertcart.nz/products/145184278-bosch-co14b-14-piece-cobalt-drill-bit-set-with-case store_origin: NZ region: New Zealand --- # High-heat resistance for tough jobs 10x longer life with 8% cobalt alloy Thick web-helix for superior stability BOSCH CO14B 14-Piece Cobalt Drill Bit Set with Case **Brand:** bosch **Price:** NZ$105 **Availability:** ✅ In Stock ## Summary > ⚡ Drill Like a Pro, Last Like a Legend ## Quick Answers - **What is this?** BOSCH CO14B 14-Piece Cobalt Drill Bit Set with Case by bosch - **How much does it cost?** NZ$105 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/145184278-bosch-co14b-14-piece-cobalt-drill-bit-set-with-case) ## Best For - bosch enthusiasts ## Why This Product - Trusted bosch brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Unmatched Durability:** 8% cobalt M42 alloy delivers 10x longer lifespan than standard bits, so you drill with confidence every time. - • **Stability Meets Speed:** Thick web-helix design ensures fast material removal and rock-solid stability for precision drilling without wobble. - • **Versatile Metal Mastery:** Perfect for stainless steel, cast iron, titanium, and aluminum—your go-to set for any professional-grade metal drilling task. - • **Ergonomic Grip & Control:** Three-flat shank and split point design on larger bits provide superior bit retention and effortless control during intense projects. - • **Heat-Resistant Precision:** Engineered to withstand extreme temperatures, these bits keep their edge even under the hottest, most demanding metalwork. ## Overview The BOSCH CO14B 14-Piece Cobalt Drill Bit Set features premium M42 cobalt alloy with 8% cobalt content, delivering 10 times the lifespan of standard bits. Designed for high-heat resistance and durability, this set excels in drilling tough metals like stainless steel, cast iron, and titanium. Its thick web-helix design enhances stability and speed, while the three-flat shank and split point ensure superior grip and precision. Ideal for professionals and serious DIYers seeking reliable, long-lasting performance in metal drilling. ## Description BOSCH Cobalt M42 metal drill bits are engineered with an upgraded M42 alloy containing 8% cobalt. These hard-core Cobalt bits deliver 10x life vs. Standard bits, are jobber length and withstand high-heat applications. Ideal for diy projects, maintenance and repair, and metalworking; these twist drill bits provide dependable performance for diyers tackling tasks around the home or garage. The thick web-helix design of metal drill bit set for steel delivers fast material removal and increased stability for precision drilling and metal drilling. Bits that are 1/8 in. and larger feature a split point; bits 3/16 in. and larger feature a three-flat shank, for better bit grip. Designed as part of the BOSCH tools collection, these Cobalt drill bits provide superior performance in stainless steel and can be used to drill cast iron, titanium and other hard or abrasive metals. Review: Premium Drill Bit That Powers Through Metal Effortlessly - This BOSCH Cobalt M42 3/8" drill bit performs extremely well, especially on hard metals. It made drilling feel almost effortless. Fit: Fits securely in standard drill chucks thanks to the three-flat shank design, with no slipping during use. Size: The 3/8" size is accurate and consistent, making clean and precise holes in various materials. Ease of Use: Very easy to use. It stays stable while drilling and doesn’t require excessive force to cut through tough metal. Compatibility: Works well across a range of materials including stainless steel, cast iron, and aluminum without issue. Case: Packaging is simple and protective enough to keep the bit safe during storage and transport. Appearance: Clean, professional look with a solid cobalt finish that reflects its heavy-duty design. Overall, this drill bit performs like a high-quality tool should. It cut through hard metal almost like melted butter, making it a reliable choice for demanding drilling tasks. Review: Razor sharp (as it should be), seems to hold edges well, and a decent price - Drilling wood is a lot easier on bits than drilling steel or cast iron, but working with hard woods (like bubinga, rock maple, and Brazilian rosewood) dulls them down pretty fast. I'd sharpened the 1/8" bit in my full bit-set so often that it was too short, so I needed another, and thought I'd get Bosch, I'd heard they're quality tools. I bought an extra for the small collection I keep in my drill/driver case, since I use the 1/8" bit more than any of the others. I just received the two Bosch bits last night, went out to finish a shelf project where I had to drill about 40 1/8" holes in rosewood, 1/2" deep. I put this bit in my drill press, and it went into that hardwood like it was butter, no tear-out around the holes, and it's still sharper than I can get on a Drill Dr. I can't say how long it'll stay sharp, but so far I'm impressed ## Features - Enhanced M42 Alloy Material: These drill bits for metal contain an 8% cobalt alloy that delivers 10x life vs. Standard bits - Cobalt M42 Drill Bit: Provides upgraded M42 cobalt drill bits, jobber-length bits designed for durability, high heat resistance and Hardened surface for stainless steel, cast iron, titanium, light-gauge metal and aluminum - Surface-hardened Tip: The Cobalt drill bits for hardened steel penetrate tough, abrasive materials - High-heat Resistant Bits: This drill bit set for metal withstands high-temperature applications for extended periods of time - Thick Web-helix Design: The BOSCH drill bit set features a thick web-helix design that provides additional stability in tough applications - Includes: A versatile drill bit for metal assortment featuring 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16", 3/8", and 1/2" sizes ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07Q9HNTBH | | Best Sellers Rank | #2,799 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #8 in Jobber Drill Bits | | Brand | Bosch | | Brand Name | Bosch | | Customer Reviews | 4.6 out of 5 stars 7,307 Reviews | | Cutting Angle String | 135 degrees | | Cutting Diameter | 0.5 inches | | Finish Type | Titanium | | Finish Types | Titanium | | Global Trade Identification Number | 00000346594591 | | Included Components | 14 Drill Bits; Case | | Item Dimensions | 7.2 x 5.6 x 1.8 inches | | Item Highlight | Metal drilling, drill bits set to drill holes in metal, M42, three-flat shank, drill bits for stainless steel | | Item Type Name | Bosch CO14B 14 pc. Cobalt M42 Drill Bit Set | | Manufacturer | BOSCH | | Material | Cobalt | | Material Type | Cobalt | | Minimum Bore Diameter | 0.06 inches | | Model | CO14B | | Number of Flutes | 3 | | Number of Packs | 1 | | Number of Pieces | 14 | | Part Number | CO14B | | Point Style | Split Point | | Set Name | 14-Piece Cobalt M42 Metal Drill Bit Set | | Shank Type | 3-Flat | | Surface Recommendation | Cast Iron,Metal,Metals,Stainless Steel | | Tool Flute Type | Spiral | | UPC | 000346594591 | | Unit Count | 14 Count | | Warranty Description | Product Defects Only | ## Product Details - **Cutting Angle String:** 135 degrees - **Cutting Diameter:** 0.5 inches - **Finish Type:** Titanium - **Material:** Cobalt - **Shank Type:** 3-Flat ## Images ![BOSCH CO14B 14-Piece Cobalt Drill Bit Set with Case - Image 1](https://m.media-amazon.com/images/I/510IVXUDjfL.jpg) ![BOSCH CO14B 14-Piece Cobalt Drill Bit Set with Case - Image 2](https://m.media-amazon.com/images/I/81UaOHHiAQL.jpg) ![BOSCH CO14B 14-Piece Cobalt Drill Bit Set with Case - Image 3](https://m.media-amazon.com/images/I/714iSZUYYoL.jpg) ![BOSCH CO14B 14-Piece Cobalt Drill Bit Set with Case - Image 4](https://m.media-amazon.com/images/I/811YsejSdJL.jpg) ![BOSCH CO14B 14-Piece Cobalt Drill Bit Set with Case - Image 5](https://m.media-amazon.com/images/I/81-FFmin7RL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Length of the bits for each diameter?** A: "Hi there, please see the following model with diameter and length size of the bits that comes in CO14B; CO2131 - 1/16"" - 1.875"" CO2132 - 5/64"" - 2.0"" CO2133 - 3/32"" - 2.5"" CO2134 - 7/64"" - 2.625"" CO2135 - 1/8"" - 2.75"" CO2136 - 9/64"" - 2.875"" CO2137 - 5/32"" - 3.125"" CO2139B - 3/16"" - 3.5"" CO4141 - 7/32"" - 3.75"" CO2145 - 1/4"" - 4.5"" CO2147 - 5/16"" - 4.5"" CO2151 - 3/8"" - 5.0"" CO2159 1/2"" - 6.0"" For further assistance, contact us at 1-877-BOSCH99 (1-877-267-2499) from Mon-Fri 7A-7P CST." **Q: Where is the 5/64" individual bit? (The only one I need to replace, of course!)** A: You always have to order any single bit or bit replacement separately, unless you can convince the company otherwise. **Q: Does Bosch make a metric set????** A: This COB14B Drill bit set is at a standard or imperial measurement. For further assistance, contact us at 1-877-BOSCH99 (1-877-267-2499) from Mon-Fri 7A-7P CST. **Q: Do either of the sets come with a bit holder? If not, what size bit holder would work?** A: The CO14B set doesn't come with a bit holder. The bits will work with drills that caters straight shank bits and three-flat shank bits. For further assistance, contact us at 1-877-BOSCH99 (1-877-267-2499) from Mon-Fri 7AM-7PM CST. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Premium Drill Bit That Powers Through Metal Effortlessly *by J***F on April 23, 2026* This BOSCH Cobalt M42 3/8" drill bit performs extremely well, especially on hard metals. It made drilling feel almost effortless. Fit: Fits securely in standard drill chucks thanks to the three-flat shank design, with no slipping during use. Size: The 3/8" size is accurate and consistent, making clean and precise holes in various materials. Ease of Use: Very easy to use. It stays stable while drilling and doesn’t require excessive force to cut through tough metal. Compatibility: Works well across a range of materials including stainless steel, cast iron, and aluminum without issue. Case: Packaging is simple and protective enough to keep the bit safe during storage and transport. Appearance: Clean, professional look with a solid cobalt finish that reflects its heavy-duty design. Overall, this drill bit performs like a high-quality tool should. It cut through hard metal almost like melted butter, making it a reliable choice for demanding drilling tasks. ### ⭐⭐⭐⭐⭐ Razor sharp (as it should be), seems to hold edges well, and a decent price *by O***9 on March 25, 2026* Drilling wood is a lot easier on bits than drilling steel or cast iron, but working with hard woods (like bubinga, rock maple, and Brazilian rosewood) dulls them down pretty fast. I'd sharpened the 1/8" bit in my full bit-set so often that it was too short, so I needed another, and thought I'd get Bosch, I'd heard they're quality tools. I bought an extra for the small collection I keep in my drill/driver case, since I use the 1/8" bit more than any of the others. I just received the two Bosch bits last night, went out to finish a shelf project where I had to drill about 40 1/8" holes in rosewood, 1/2" deep. I put this bit in my drill press, and it went into that hardwood like it was butter, no tear-out around the holes, and it's still sharper than I can get on a Drill Dr. I can't say how long it'll stay sharp, but so far I'm impressed ### ⭐⭐⭐⭐⭐ You need these cobalt drill bits to drill into metal *by I***7 on October 1, 2026* I have lots of drill bits and none of them would drill two holes in a medium thick sheet metal - very frustrating. I researched on-line and determined that Cobalt drills should work, and they did nicely. Amazon delivered super-quick and I drilled my holes as needed. These are great! I am gong to stick with cobalt drills bits in the future ## Frequently Bought Together - BOSCH CO14B 14-Piece Assorted Set with Included Case - Cobalt M42 Metal Drill Bits with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, and Light-Gauge Metal - Tap Magic 30004P ProTap Cutting Fluid, 4 oz. Size - Lubri-Cut Cutting Paste for Drilling Metal - 2 Oz Tub - Made in USA | Beeswax Oil for Metal | High Performance Tapping & Cutting Wax | Saw Blade Lubricant & Drill Fluid --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.nz/products/145184278-bosch-co14b-14-piece-cobalt-drill-bit-set-with-case](https://www.desertcart.nz/products/145184278-bosch-co14b-14-piece-cobalt-drill-bit-set-with-case) --- *Product available on Desertcart New Zealand* *Store origin: NZ* *Last updated: 2026-10-07*