---
product_id: 614958243
title: "Cobalt Drill Bit Set, 5/16\" (10pcs) M35 High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case"
brand: "macxcoip"
price: "฿2909"
currency: THB
in_stock: true
reviews_count: 13
category: "Macxcoip"
url: https://www.desertcart.co.th/products/614958243-cobalt-drill-bit-set-5-16-10pcs-m35-high-speed
store_origin: TH
region: Thailand
---

# Cobalt Drill Bit Set, 5/16" (10pcs) M35 High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case

**Brand:** macxcoip
**Price:** ฿2909
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Cobalt Drill Bit Set, 5/16" (10pcs) M35 High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case by macxcoip
- **How much does it cost?** ฿2909 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/614958243-cobalt-drill-bit-set-5-16-10pcs-m35-high-speed)

## Best For

- macxcoip enthusiasts

## Why This Product

- Trusted macxcoip brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

MACXCOIP Cobalt Drill Bit Set, 5/16" (10pcs) M35 High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case - desertcart.com

Review: Strong cobalt drill bits cut hard metal well - This cobalt drill bit set performs really well on harder materials. The bits stay sharp and cut cleanly when used with proper speed and pressure. Sizes are accurate and the set covers most common needs. Used them for metal drilling and they handled the job without overheating or dulling quickly. Great value set for DIY or shop use and a nice upgrade from standard bits.
Review: I cleared a stripped screw head using one of these bits - I cleared a stripped screw head using one of these bits and it took me less than 20 seconds. I had previously tried using several different extractors and none worked. One of these bits was literally the only way I could remove the screw. For note taking purposes, the screw belonged to a door knob and was also warped. I am happy with the quality of all of the drill bits. Mine came slightly lubricated with some kind of machine oil. The affordability of these cobalt drill bits is excellent and their performance is even better. The speed that I was able to remove the stripped screw with was amazing. I literally drilled into it and the lingering stuck knob literally fell off. If all else fails and you're trying to remove a stripped or warped screw, try using these bits to help you out.

## Features

- Single Size: The drill bits include 10pcs 5/16" drills. If you have specific drilling size requirements, then the drill bit is very suitable for you
- M35 Cobalt Drill Bit: The M35 cobalt drill bit is a durable, sharp and robust drill bit suitable for cutting stainless steel, iron castings, copper, aluminum and other soft metals as well as plastics, wood etc
- Quick and Efficient: The cobalt drill bit set can be used effectively on most soft and hard objects, with a 135 degree point tip and twist design for faster cutting, self-centering to prevent walk-off and faster chip and particle removal
- HSS Drill Bit Set: HSS cobalt drill bit set for hardened steel with excellent cutting performance. 13 sets of drill bits for long term use. The inserts are hardened and polished for improved sharpness and precise cutting without wobbling
- Easy to store: The drill bit kit is packaged in a small and sturdy package for easy storage and sorting. If you have any questions, please refer to us and we will be happy to assist you

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C3TYK6BD |
| Best Sellers Rank | #1,641 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #7 in Jobber Drill Bits |
| Brand Name | MACXCOIP |
| Customer Reviews | 4.4 4.4 out of 5 stars (2,380) |
| Cutting Angle String | 135 Degrees |
| Cutting Diameter | 0.31 Inches |
| Finish Types | Titanium |
| Included Components | Cobalt Drill Bit |
| Manufacturer | MACXCOIP |
| Material Type | Alloy Steel, Cobalt, Cobalt Steel, High Speed Steel (HSS), Stainless Steel |
| Model | Cobalt Drill Bit |
| Number of Flutes | 2 |
| Point Style | Spear Point |
| Shank Type | Straight |
| Surface Recommendation | Aluminum,Cast Iron,Copper,Iron,Metal,Plastic,Stainless Steel,Steel,Wood |
| Tool Flute Type | Spiral |
| UPC | 715787182787 |
| Unit Count | 10.0 Count |

## Product Details

- **Cutting Angle String:** 135 Degrees
- **Cutting Diameter:** 0.31 Inches
- **Finish Type:** Titanium
- **Material:** Alloy Steel, Cobalt, Cobalt Steel, High Speed Steel (HSS), Stainless Steel
- **Shank Type:** Straight

## Images

![Cobalt Drill Bit Set, 5/16" (10pcs) M35 High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case - Image 1](https://m.media-amazon.com/images/I/71VmjvzsITL.jpg)
![Cobalt Drill Bit Set, 5/16" (10pcs) M35 High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case - Image 2](https://m.media-amazon.com/images/I/71cxtR6PfpL.jpg)
![Cobalt Drill Bit Set, 5/16" (10pcs) M35 High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case - Image 3](https://m.media-amazon.com/images/I/71DjD9B5dzL.jpg)
![Cobalt Drill Bit Set, 5/16" (10pcs) M35 High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case - Image 4](https://m.media-amazon.com/images/I/81JxDqbPuVL.jpg)
![Cobalt Drill Bit Set, 5/16" (10pcs) M35 High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case - Image 5](https://m.media-amazon.com/images/I/71kPJ3fo5vL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Strong cobalt drill bits cut hard metal well
*by J***Y on January 30, 2026*

This cobalt drill bit set performs really well on harder materials. The bits stay sharp and cut cleanly when used with proper speed and pressure. Sizes are accurate and the set covers most common needs. Used them for metal drilling and they handled the job without overheating or dulling quickly. Great value set for DIY or shop use and a nice upgrade from standard bits.

### ⭐⭐⭐⭐⭐ I cleared a stripped screw head using one of these bits
*by G***A on December 8, 2025*

I cleared a stripped screw head using one of these bits and it took me less than 20 seconds. I had previously tried using several different extractors and none worked. One of these bits was literally the only way I could remove the screw. For note taking purposes, the screw belonged to a door knob and was also warped. I am happy with the quality of all of the drill bits. Mine came slightly lubricated with some kind of machine oil. The affordability of these cobalt drill bits is excellent and their performance is even better. The speed that I was able to remove the stripped screw with was amazing. I literally drilled into it and the lingering stuck knob literally fell off. If all else fails and you're trying to remove a stripped or warped screw, try using these bits to help you out.

### ⭐⭐⭐⭐ Great set! … except for one thing.
*by D***S on November 28, 2023*

I work with metal daily, so I go through a lot of drillbits. cobalt is great for working with metal but it can be brittle if you don’t know what you’re doing. I read some complaints about people snapping their bits and I have yet to do so, and have been using them for months. For the most part, they stay sharp and cut well as long as you take care of them and use them at the proper speed and pressure. The size of the set provides the sized bits needed so that I can properly drill and tap a hole. The one major problem I have with this set is the rounded shaft. All bits are completely round and if your bit bites in the medal, the drill chuck will spin and strip on the shaft. This will happen often especially with the larger bits. That’s annoying in itself but when makes it really bad is the fact that the drillbit sizes are etched exactly in that area, so you essentially strip off the drillbit size label very easily, and the only way to make sure you have the correct size, is you must stay organized and keep it in its case and its proper spot. For this reason, I highly recommended purchasing the option with the metal case provided. Overall, it’s a great set and I’d likely buy it again based on its price point and quality.

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-04-27*