---
product_id: 724437592
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: "¥13707"
currency: JPY
in_stock: true
reviews_count: 5
category: "Macxcoip"
url: https://www.desertcart.jp/products/724437592-cobalt-drill-bit-set-5-16-10pcs-m35-high-speed
store_origin: JP
region: Japan
---

# 135° Spear Point - Precision Cutting M35 Cobalt Alloy - Ultra Durable Compact Index Case - Organized Storage 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:** ¥13707
**Availability:** ✅ In Stock

## Summary

> 🔧 Drill Like a Pro, Finish Like a Boss!

## 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?** ¥13707 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/724437592-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

## Key Features

- • **Ready-to-Go Kit:** 10 identical 5/16" bits in a sleek, sturdy case for quick access and perfect organization.
- • **Unmatched Durability:** M35 cobalt steel ensures long-lasting sharpness even on hardened metals.
- • **Precision Engineering:** 135° spear point tip and spiral flutes deliver fast, clean, and wobble-free drilling.
- • **Versatile Performance:** Effortlessly drills stainless steel, cast iron, wood, plastic, and more with ease.
- • **Professional Grade Efficiency:** Self-centering design minimizes walk-off, speeding up your workflow and reducing fatigue.

## Overview

The MACXCOIP 5/16" 10-piece M35 cobalt drill bit set combines high-speed steel alloy durability with a 135° spear point design for precision drilling across metals, wood, and plastics. Packaged in a compact index case, these bits offer professional-grade performance with self-centering tips and polished flutes for fast, clean cuts and long-lasting sharpness.

## Description

MACXCOIP Cobalt Drill Bit

Review: Duración similar a las Milwaukee titanio - Bastante satisfecho con la duración, es similar a las brocas Milwaukee titanio pero a un precio menor para ser de cobalto esperaba que duraran un poco más pero aun así muy satisfecho
Review: These bits are awesome!!! - I bought a 10 pack because where I needed to use them, there was no store to buy replacements if it turned out these were junk. In the end, these (this) bit was as pleasant surprise. I drilled 30 holes in a steel I-beam with only needing a single bit and it still drills effectively without needing excessive force. The holes were drilled fast and easily with clean breakout on the backside. The drill bit cutting edge was does show some damage (see closeup image) after the 30 holes but it still drills effectively. I have no doubts the bit would drill another 10 holes on the same bit. I am surprised there is rust on the cutting edge since the HSS and cobalt is pretty rust resistant… I wouldn’t expect rust after sitting just a single day. The hardness of the bit must vary from the tip (very hard) to the shank end (soft) since there is a lot of damage where the bit slipped in the drill jaws a couple times (see close-up). Whatever the hardness range is, I’m happy with the combination of hardness and ductility and the overall drilling results. The bits come in a nice plastic case that can expand in length so it will hold a variety of bits including longer bits. The case opens easily to grab a replacement (I didn't need to) and closes tightly enough to not worry about spilling any. The case is right sized and not too big for the typical handful of bits needed. Overall, I'm very happy with these bits.

## 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 | 564,956 in DIY & Tools ( See Top 100 in DIY & Tools ) 4,689 in Drill Bit Sets |
| Brand | MACXCOIP |
| Customer Reviews | 4.3 out of 5 stars 2,220 Reviews |
| Cutting Angle String | 135 Degrees |
| Cutting Diameter | 0.31 Inches |
| Cutting angle string | 135 Degrees |
| Cutting diameter | 0.31 Inches |
| Finish Types | Polished |
| Finish type | Polished |
| Included Components | Cobalt Drill Bit |
| Manufacturer | MACXCOIP |
| Manufacturer Part Number | 5/16"-10PCS |
| Material | Alloy Steel Cobalt Cobalt Steel High Speed Steel (HSS) Stainless Steel |
| Model Number | Cobalt Drill Bit |
| Number of Flutes | 2 |
| Number of Pieces | 10 |
| Point Style | Spear Point |
| Set Name | 5/16" 10-Piece Cobalt Drill Bit Set |
| Shank Type | Straight |
| 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:** Polished
- **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 **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐ Duración similar a las Milwaukee titanio
*by O***S on 14 November 2023*

Bastante satisfecho con la duración, es similar a las brocas Milwaukee titanio pero a un precio menor para ser de cobalto esperaba que duraran un poco más pero aun así muy satisfecho

### ⭐⭐⭐⭐⭐ These bits are awesome!!!
*by D***M on 1 June 2026*

I bought a 10 pack because where I needed to use them, there was no store to buy replacements if it turned out these were junk. In the end, these (this) bit was as pleasant surprise. I drilled 30 holes in a steel I-beam with only needing a single bit and it still drills effectively without needing excessive force. The holes were drilled fast and easily with clean breakout on the backside. The drill bit cutting edge was does show some damage (see closeup image) after the 30 holes but it still drills effectively. I have no doubts the bit would drill another 10 holes on the same bit. I am surprised there is rust on the cutting edge since the HSS and cobalt is pretty rust resistant… I wouldn’t expect rust after sitting just a single day. The hardness of the bit must vary from the tip (very hard) to the shank end (soft) since there is a lot of damage where the bit slipped in the drill jaws a couple times (see close-up). Whatever the hardness range is, I’m happy with the combination of hardness and ductility and the overall drilling results. The bits come in a nice plastic case that can expand in length so it will hold a variety of bits including longer bits. The case opens easily to grab a replacement (I didn't need to) and closes tightly enough to not worry about spilling any. The case is right sized and not too big for the typical handful of bits needed. Overall, I'm very happy with these bits.

### ⭐⭐⭐⭐⭐ Best drill bits ever
*by J***. on 24 June 2023*

Nothing

---

## 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.jp/products/724437592-cobalt-drill-bit-set-5-16-10pcs-m35-high-speed](https://www.desertcart.jp/products/724437592-cobalt-drill-bit-set-5-16-10pcs-m35-high-speed)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-08-19*