---
product_id: 123486923
title: "SPEED TIGER Micrograin Carbide Square End Mill - 4 Flute - ISE3/8 4T (5 Pieces, 3/8\") - for Milling Alloy Steels, Hardened Steel, Metal & More – Mill Bits Sets for DIYers & Professionals"
brand: "speed tiger"
price: "R$1703"
currency: BRL
in_stock: true
reviews_count: 8
url: https://www.desertcart.com.br/products/123486923-speed-tiger-micrograin-carbide-square-end-mill-4-flute-ise3
store_origin: BR
region: Brazil
---

# SPEED TIGER Micrograin Carbide Square End Mill - 4 Flute - ISE3/8 4T (5 Pieces, 3/8") - for Milling Alloy Steels, Hardened Steel, Metal & More – Mill Bits Sets for DIYers & Professionals

**Brand:** speed tiger
**Price:** R$1703
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** SPEED TIGER Micrograin Carbide Square End Mill - 4 Flute - ISE3/8 4T (5 Pieces, 3/8") - for Milling Alloy Steels, Hardened Steel, Metal & More – Mill Bits Sets for DIYers & Professionals by speed tiger
- **How much does it cost?** R$1703 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/123486923-speed-tiger-micrograin-carbide-square-end-mill-4-flute-ise3)

## 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

## Description

SPEED TIGER Micrograin Carbide Square End Mill - 4 Flute - ISE3/8 4T (5 Pieces, 3/8") - for Milling Alloy Steels, Hardened Steel, Metal & More – Mill Bits Sets for DIYers & Professionals

## Features

- About this item
- GENERAL APPLICATION CUTTER - Speed Tiger 600 Nano carbide tools excel at working carbon steels (~HB225), alloy steels (HB225~325), pre-hardened steels (up to HRC45), hardened Steels (HRC40~45), cast iron     HIGH PERFORMANCE FOR HARD MATERIALS - Cutter is made of Micro Grain Carbide that is very tough, resists wear and offers high cutting performance     AlTiBN COATING - Titanium aluminum boron nitride (AlTiBN) coating lubricates the end mill for stability at high temperature and superior wear resistance at high cutting speeds, offering better heat resistance than TiAlN, TiN or TiCN coatings     HIGH-QUALITY - Flutes ground by a world-class ISO-9001 Factory

## Images

![SPEED TIGER Micrograin Carbide Square End Mill - 4 Flute - ISE3/8 4T (5 Pieces, 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/71tdNZIqYML.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    Best Value for 1/2 Carbide on Amazon
  

*by T***N on Reviewed in the United States on October 31, 2018*

I use these in production everyday, all day, these 2 are still running. I am currently running 6000 rpm, 3/4" DOC with a radial cut of .058" in 304 Stainless DRY with NO COOLANT(chips rooster tail 6 feet)...ready for this:102" Inches per minute! 65 parts later still cutting!

### ⭐⭐⭐⭐ 







  
  
    Decent bit but do snap fairly easily. See comments.
  

*by R***! on Reviewed in the United States on October 25, 2018*

UPDATE:  I upped my rating from 2 tp 4 stars. Customer service was very helpful and responsive. They actually contacted me when they saw my original review. I found that my spindle speed was too slow. Obviously it depends on the material but these bits have to be spun pretty fast and the depth and feed rate must be shallow and slow as well. My mill only spins at max 2800rpm. So I spun it at 2800rpm and took a more shallow cut along with a slow feed rate and these things cut pretty decently. I assume they would work better at an even faster spindle speed. They are still very brittle and will snap if you apply to much side pressure. Overall they did the job I needed them for.Item came packaged well and they looked good.  I ordered the 1/16th size and these things snap at the slightest pressure.  I almost messed up my project so I had to discontinue using them due to them snapping so easily.  I tried another set I had and had no issue.

### ⭐⭐⭐⭐⭐ 







  
  
    Great value.
  

*by N***C on Reviewed in the United States on August 20, 2020*

I'm new to machining but I bought these because they were cheap and I needed endmills that wouldn't have me selling a kidney to replace after a mess up. After using these for a while, and dang, these aren't half bad at all. I've never had one fail on me that wasn't my own doing. Everyone who is saying they failed on them just doesn't want to admit they totally messed up somewhere in their cam program or pushed it way too hard. I get a great finish with these on aluminum,  which is satisfying. Great product, they're my go too for making prototype parts for my company.

---

## 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.com.br/products/123486923-speed-tiger-micrograin-carbide-square-end-mill-4-flute-ise3](https://www.desertcart.com.br/products/123486923-speed-tiger-micrograin-carbide-square-end-mill-4-flute-ise3)

---

*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-02-20*