---
product_id: 436854092
title: "Cobalt Drill Bit Set (1/16-1/2 Inch, 17PCS), M35 High Speed Steel Twist Drill Bits for Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood"
brand: "stroton"
price: "B/.139"
currency: PAB
in_stock: true
url: https://www.desertcart.com.pa/products/436854092-cobalt-drill-bit-set-1-16-1-2-inch-17pcs
store_origin: PA
region: Panama
---

# 68 HRC Rockwell Hardness for superior heat resistance Runs 2-3x faster than standard drill bits 5% Premium Cobalt Steel for extreme durability Cobalt Drill Bit Set (1/16-1/2 Inch, 17PCS), M35 High Speed Steel Twist Drill Bits for Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood

**Brand:** stroton
**Price:** B/.139
**Availability:** ✅ In Stock

## Summary

> ⚡ Drill Like a Pro, Last Like a Legend

## Quick Answers

- **What is this?** Cobalt Drill Bit Set (1/16-1/2 Inch, 17PCS), M35 High Speed Steel Twist Drill Bits for Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood by stroton
- **How much does it cost?** B/.139 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/436854092-cobalt-drill-bit-set-1-16-1-2-inch-17pcs)

## Best For

- stroton enthusiasts

## Why This Product

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

## Key Features

- • **Pro Tips Included:** Optimized RPM guidelines and lubrication hacks for stainless steel mastery
- • **Cost-Effective Longevity:** Drill more holes with fewer bit changes—lowest cost per hole in its class
- • **Versatile 17-Piece Range:** From 1/16 to 1/2 inch, perfect for metals, plastics, and wood
- • **Precision Split Point Tip:** Starts drilling instantly with zero walking for flawless accuracy
- • **Unmatched Heat & Wear Resistance:** 5% cobalt alloy keeps bits cooler and sharper under pressure

## Overview

The Cobalt Drill Bit Set features 17 precision-engineered bits made from premium 5% cobalt high-speed steel, delivering exceptional hardness (68 HRC) and heat resistance. Designed for professional-grade drilling through stainless steel, hardened metals, plastics, and wood, these bits run 2-3 times faster than standard sets, ensuring longer tool life and superior performance. Ideal for millennial managers who demand efficiency and reliability in their toolkit.

## Description

Product Advantages:  (1) Split Point Design tip starts drilling immediately with less force and eliminates "walking" across the work surface. (2) Holds up better than generic high-speed steel,Cobalt gives high-speed steel more heat and wear resistance. (3) This drill bits set is made of Premium Cobalt (80,000 dollars per ton).(4) The 5% cobalt drill bits can cut through Stainless steel and Hard metal,Hard wood, although they can be used for softer materials such as Aluminum,Plastic. Some Important Tips about drilling stainless steel and hard metal:      (1)Controling the drill speed from 200 to 1000 RPM would make it easier for you to drill holes on stainless steel.  ________________________________                Stainless Steel                       ____________________________       Drill diameter               RPM             ____________________________       ≤3/16"                       1000~700    ____________________________       3/16"-3/8"                     700~350     ____________________________        3/8"-1/2"                   350~200 ________________________________     (2)Add stainless steel tapping oil or engine oil to prevent the stainless steel from overheating and forming a very hard oxide layer.It also works adding some vinegar,soy sauce or water if you don't have engine oil.

## Features

- Premium 5% Cobalt Steel ,68 HRC (Rockwell Hardness Scale) ,the Cobalt Usually Give the Best Heat,Wear and Chip Resistance and Long Tool Life.
- The Cutting Edge has been Ground Three Times and is made of Cobalt Steel, which has High Hardness and Heat Resistance. It is Designed for Drilling through Stainless Steel, Hardened Steel, Iron, Aluminum, Pipes, Wood, PVC, and Plastics.
- This Heavy Duty Work Cobalt Drill Bit is Typically Capable of Running Two to Three Times Faster.Despite the Higher Price,the Cost Per Hole When Using Cobalt Drill Bit Will be the Lowest,Since It Can Produce So Many More Holes.
- The Sufficiently Sharp Bit Edge Can Cut the Metal Material into Long Strips of Iron Chips rather than Slowly Grinding Through the Material with a Blunt Drill Bit.
- 17Pcs 135 Degree Cobalt Industrial Hss Drill Bits Kit Includes :1/16 (2pcs), 5/64, 3/32 (2pcs), 7/64, 1/8 (2pcs), 9/64, 5/32, 3/16, 7/32, 1/4 (2pcs), 5/16, 3/8, 1/2 .

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | STROTON Ltd |
| Part number | Cobalt 6 series bits inch 1/16-1/2 |
| Item Weight | 516 g |
| Product Dimensions | 18 x 13 x 4 cm; 516 g |
| Item model number | Cobalt 6 series bits inch 1/16-1/2 |
| Size | 1/16-1/2 in (17PCS) |
| Finish | High Speed Steel,Stainless Steel |
| Material | Cobalt |
| Item Package Quantity | 1 |
| Number Of Pieces | 17 |
| Measurement System | SAE |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Material:** Cobalt
- **Cutting diameter:** 0.5 Inches
- **Finish type:** High Speed Steel,Stainless Steel
- **Shank type:** (1/16-7/32: Round Shank) (1/4-1/2: 3-Flat Shank)
- **Cutting angle string:** 135 Degrees

## Images

![Cobalt Drill Bit Set (1/16-1/2 Inch, 17PCS), M35 High Speed Steel Twist Drill Bits for Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood - Image 1](https://m.media-amazon.com/images/I/81nznZfGTrL.jpg)

## Available Options

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

## Questions & Answers

**Q: Are these good for make holes in steel material?**
A: Yes，good for drilling steel.Generally, sellers purchase products from the market and sell them on e-commerce platforms. The STROTON drill bits we sell are designed and produced by our factory, including the case, which is unique on the market. This drill bit contains 6% cobalt, which is higher than general products. In addition, STROTON hss drill bits have a secret heat treatment recipe.So They’re good at drilling steel.

**Q: Where are these made?**
A: They are made in China. 
They are very good cobalt drill bits set.It is designed and manufactured by STROTON, different from the similar products in the market.

## Frequently Bought Together

- STROTON Cobalt Drill Bit Set (1/16-1/2 Inch, 17PCS), M35 High Speed Steel Twist Drill Bits for Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood
- amoolo 3/8" Cobalt Drill Bit(5Pcs), M35 HSS Metal Drill Bit Set for Hard Metal, Stainless Steel, Cast Iron
- BECOLLO 1/4 Inch Cobalt Drill Bit Set, M35 Jobber Length Twist Drill Bits,Suitable for Drilling in Hard Metal, Stainless Steel, Cast Iron,10 Pieces

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**Shop now:** [https://www.desertcart.com.pa/products/436854092-cobalt-drill-bit-set-1-16-1-2-inch-17pcs](https://www.desertcart.com.pa/products/436854092-cobalt-drill-bit-set-1-16-1-2-inch-17pcs)

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*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-02-07*