---
product_id: 313585065
title: "IRWIN Tools Black Oxide Countersink Drill Bit, 5-Piece Set (1877791)"
brand: "irwin"
price: "2321016₫"
currency: VND
in_stock: true
url: https://www.desertcart.vn/products/313585065-irwin-tools-black-oxide-countersink-drill-bit-5-piece-set
store_origin: VN
region: Vietnam
---

# 5-Piece Set 82-Degree Tip High-Speed Steel IRWIN Tools Black Oxide Countersink Drill Bit, 5-Piece Set (1877791)

**Brand:** irwin
**Price:** 2321016₫
**Availability:** ✅ In Stock

## Summary

> 🔧 Drill Like a Pro with IRWIN's Best!

## Quick Answers

- **What is this?** IRWIN Tools Black Oxide Countersink Drill Bit, 5-Piece Set (1877791) by irwin
- **How much does it cost?** 2321016₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/313585065-irwin-tools-black-oxide-countersink-drill-bit-5-piece-set)

## Best For

- irwin enthusiasts

## Why This Product

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

## Key Features

- • **Universal Fit:** 1/4-inch round shank fits all handheld and stationary drills for ultimate convenience.
- • **Vibration Reduction:** Five-flute design minimizes vibration for a smoother drilling experience.
- • **Corrosion Resistance:** Black oxide finish ensures your bits stay protected against wear and tear.
- • **Unmatched Durability:** Crafted from industrial-grade High-Speed Steel for long-lasting performance.
- • **Versatile Compatibility:** Precision-ground 82-degree tip effortlessly drills into metal, wood, and plastic.

## Overview

The IRWIN Tools Black Oxide Countersink Drill Bit Set includes five precision-engineered bits made from high-speed steel, designed for durability and versatility. With a black oxide finish for corrosion resistance and a unique five-flute design to reduce vibration, this set is perfect for drilling countersink holes in various materials, including machinable metals, wood, and plastic. The 1/4-inch round shank ensures compatibility with all types of drills, making it an essential addition to any toolkit.

## Description

Tools Black Oxide Countersink Drill Bit, 5-Piece Set (1877791)

## Features

- Made from industrial grade High-Speed Steel for increased durability. Black oxide finish adds corrosion resistance.
- Five-flute design reduces vibration for smoother drilling and extended bit life.
- Precision-ground 82-degree tip drills countersink holes into most machinable metals, as well as wood and plastic.
- 1/4-inch round shank fits all handheld and stationary drills.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | IRWIN |
| Part number | 1877791 |
| Item Weight | 63.5 g |
| Product Dimensions | 2.54 x 11.75 x 13.34 cm; 63.5 g |
| Item model number | 1877791 |
| Size | One Size |
| Color | Multicolor |
| Style | Classic |
| Finish | Black Oxide |
| Material | High Speed Steel |
| Pattern | Solid |
| Shape | Rectangular |
| Power source type | Hand_powered |
| Item Package Quantity | 1 |
| Number Of Pieces | 5 |
| Measurement System | Inch |
| Included components | (5) Countersink Bits sizes: 1/4", 3/8", 1/2", 5/8" and 3/4" |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Material:** High Speed Steel
- **Cutting diameter:** 6.35 Millimeters
- **Finish type:** Black Oxide
- **Shank type:** Round
- **Cutting angle string:** 82 Degrees

## Images

![IRWIN Tools Black Oxide Countersink Drill Bit, 5-Piece Set (1877791) - Image 1](https://m.media-amazon.com/images/I/51H9zNxZ0kL.jpg)

## Questions & Answers

**Q: Will this work for structural tube 1/8" thick?**
A: Yes, IRWIN 1877791 is recommended for metal, plastic or wood applications.

**Q: Do these come in a storage box? I saw one review saying the packaging could be better.**
A: No, this does not include a storage box.

**Q: Is there a warranty on them?**
A: Thank you for choosing Irwin tools. Our goal is to provide the highest quality service. The product does have a limited lifetime warranty for the reasonable life of the tool covering them from any manufacturing defects. It does not cover for normal wear and tear of the item.

**Q: How long is the shank?**
A: 3/4 inch long shank

## Frequently Bought Together

- IRWIN IRWIN Tools 1877791 Black Oxide Countersink Drill Bit, 5-Piece Set
- Bosch CC2430 Clic-Change 1/4 in. Self-Centering Drill Bit Assortment (3-Piece)
- BOSCH SP515 5 Piece Hex Shank Countersink Drill Bit Set with #6, #8, #10, and #12

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-02-18*