---
product_id: 123610992
title: "Micrograin Carbide Square End Mill - 4 Flute - ISE3/8 4T (1 Piece, 3/8\") - for Milling Alloy Steels, Hardened Steel, Metal & More – Mill Bits Sets for DIYers & Professionals"
brand: "speed tiger"
price: "KD 13.97"
currency: KWD
in_stock: true
reviews_count: 10
category: "Speed Tiger"
url: https://www.desertcart.com.kw/products/123610992-micrograin-carbide-square-end-mill-4-flute-ise3-8-4t
store_origin: KW
region: Kuwait
---

# AlTiBN coating for superior heat resistance 4 Flutes for smooth, efficient cutting Micrograin carbide for unmatched toughness Micrograin Carbide Square End Mill - 4 Flute - ISE3/8 4T (1 Piece, 3/8") - for Milling Alloy Steels, Hardened Steel, Metal & More – Mill Bits Sets for DIYers & Professionals

**Brand:** speed tiger
**Price:** KD 13.97
**Availability:** ✅ In Stock

## Summary

> ⚡ Cut sharper, last longer — own the edge with SPEED TIGER!

## Quick Answers

- **What is this?** Micrograin Carbide Square End Mill - 4 Flute - ISE3/8 4T (1 Piece, 3/8") - for Milling Alloy Steels, Hardened Steel, Metal & More – Mill Bits Sets for DIYers & Professionals by speed tiger
- **How much does it cost?** KD 13.97 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/123610992-micrograin-carbide-square-end-mill-4-flute-ise3-8-4t)

## Best For

- speed tiger enthusiasts

## Why This Product

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

## Key Features

- • **Precision Perfected:** Achieve professional-grade cuts with ±0.02mm accuracy
- • **Heat-Defying Coating:** AlTiBN layer outperforms traditional coatings for longer tool life
- • **Ready for Any Project:** Ideal for both DIY enthusiasts and seasoned pros
- • **Durability Meets Value:** Micrograin carbide ensures toughness without breaking the bank
- • **Versatile Steel Mastery:** Effortlessly mills carbon, alloy, hardened steels & cast iron

## Overview

The SPEED TIGER Micrograin Carbide Square End Mill features 4 flutes and a precision tolerance of ±0.02mm, crafted from durable micrograin carbide. Its advanced AlTiBN coating delivers exceptional heat resistance, making it perfect for milling a wide range of steels and cast iron. Designed for both professionals and DIYers, this 3/8" end mill combines high performance with great value, ensuring sharp, accurate cuts every time.

## Description

SPEED TIGER Micrograin Carbide Square End Mill - 4 Flute - ISE3/8 4T (1 Piece, 3/8") - for Milling Alloy Steels, Hardened Steel, Metal & More – Mill Bits Sets for DIYers & Professionals: desertcart.com: Industrial & Scientific

Review: Works As Advertised - Sharp and true. Does what I expect from a carbide end mill.
Review: Great product, worth every penny - Bought these for a hobby. Received them and like that they are packaged individually, thus helping keep them sharp. Used them on a firearm building project and only eneded up using one. But stayed sharp and met the needs of what I was using it for. If your are a hobbyist and looking for some high quality milling bits with out having to pay a premium these are the ones to go to.

## Features

- ✅ APPLICATION - Our carbide tools are highly effective at machining various types of steel such as Carbon Steels (~HB225), Alloy Steels (HB225~325), Pre-hardened Steels (up to HRC45), Hardened Steels (HRC40~61), and Cast Iron.
- ✅ AlTiBN COATING - This coating, made of titanium aluminum boron nitride (AlTiBN), offers exceptional stability at high temperatures and surpasses the heat resistance of TiAlN, TiN, or TiCN coatings.
- ✅ HIGH-PERFORMANCE MATERIAL - This end mill is made from micrograin carbide, which gives it exceptional toughness, durability, and machinability. It performs brilliantly and is an excellent value for its price.
- ✅ FINE WORKMANSHIP - Our products deliver outstanding high accuracy with an error of -0.02mm, empowering users to achieve professional cutting quality effortlessly.
- ✅ DEDICATED SUPPORT - Please don't hesitate to contact us on desertcart if you need the Cutting Condition Data. We want to ensure you receive the best product that meets your requirements.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07FSLS7X3 |
| Best Sellers Rank | #8,792 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Square Nose End Mills |
| Brand | SPEED TIGER |
| Cut Type | square end |
| Cutting Diameter | 9.53 Millimeters |
| Cutting Length | 2.5 Inches |
| Date First Available | July 23, 2018 |
| End Cut Type | Square End |
| Finish Type | AlTiBN |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.76 ounces |
| Item model number | ISE3-8-4T |
| Manufacturer | SPEED TIGER |
| Material | Carbide |
| Number of Cutting Edges | 4 |
| Number of Flutes | 4 |
| Product Dimensions | 2.5"L x 0.38"W |
| Shape | Square |
| Size | 3/8 in |
| Tolerance Held | Precision |

## Product Details

- **Cutting Diameter:** 9.53 Millimeters
- **Cutting Length:** 2.5 Inches
- **Finish Type:** AlTiBN
- **Material:** Carbide
- **Number of Flutes:** 4

## Images

![Micrograin Carbide Square End Mill - 4 Flute - ISE3/8 4T (1 Piece, 3/8") - for Milling Alloy Steels, Hardened Steel, Metal & More – Mill Bits Sets for DIYers & Professionals - Image 1](https://m.media-amazon.com/images/I/61+r2mRFLKL.jpg)

## Available Options

This product comes in different **Size, Item Package Quantity** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works As Advertised
*by N***J on August 27, 2025*

Sharp and true. Does what I expect from a carbide end mill.

### ⭐⭐⭐⭐⭐ Great product, worth every penny
*by B***N on January 25, 2025*

Bought these for a hobby. Received them and like that they are packaged individually, thus helping keep them sharp. Used them on a firearm building project and only eneded up using one. But stayed sharp and met the needs of what I was using it for. If your are a hobbyist and looking for some high quality milling bits with out having to pay a premium these are the ones to go to.

### ⭐⭐⭐⭐⭐ Works like it should
*by M***S on February 2, 2026*

Works good on my 1923 endmill

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**Shop now:** [https://www.desertcart.com.kw/products/123610992-micrograin-carbide-square-end-mill-4-flute-ise3-8-4t](https://www.desertcart.com.kw/products/123610992-micrograin-carbide-square-end-mill-4-flute-ise3-8-4t)

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*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-02-28*