---
product_id: 170567829
title: "3/4\" Lathe Internal Boring Bar Turning Tool Holder S20R-MWLNR08 with Indexable Carbide Turning Insert WNMG432"
brand: "aszlbym"
price: "AR$158534"
currency: ARS
in_stock: true
reviews_count: 13
category: "Aszlbym"
url: https://www.desertcart.com.ar/products/170567829-3-4-lathe-internal-boring-bar-turning-tool-holder-s20r
store_origin: AR
region: Argentina
---

# TiN-coated carbide inserts for durability High-quality alloy steel with nickel coating 3/4" shank diameter for precision fit 3/4" Lathe Internal Boring Bar Turning Tool Holder S20R-MWLNR08 with Indexable Carbide Turning Insert WNMG432

**Brand:** aszlbym
**Price:** AR$158534
**Availability:** ✅ In Stock

## Summary

> ⚙️ Cut with Confidence, Finish with Finesse!

## Quick Answers

- **What is this?** 3/4" Lathe Internal Boring Bar Turning Tool Holder S20R-MWLNR08 with Indexable Carbide Turning Insert WNMG432 by aszlbym
- **How much does it cost?** AR$158534 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/170567829-3-4-lathe-internal-boring-bar-turning-tool-holder-s20r)

## Best For

- aszlbym enthusiasts

## Why This Product

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

## Key Features

- • **Versatile Package:** Complete set with 1 boring bar, 10 premium inserts, and a wrench—ready to elevate your CNC turning projects immediately.
- • **Unmatched Durability:** Crafted from nickel-coated alloy steel, this bar resists wear and tear, promising long-lasting performance under heavy use.
- • **Carbide Cutting Power:** Includes 10 TiN-coated WNMG080408 carbide inserts designed for smooth finishing and semi-finishing with minimal friction.
- • **Precision Engineered Fit:** 3/4" (20mm) shank diameter ensures seamless integration with your lathe for ultra-precise internal boring.
- • **Optimized for High-Speed Cutting:** Handles feeds up to .035" at 280 RPM effortlessly, perfect for aluminum 6061 and other common materials.

## Overview

The S20R-MWLNR08 Lathe Internal Boring Bar is a precision tool holder featuring a 3/4" nickel-coated alloy steel shank and 10 TiN-coated carbide inserts (WNMG080408). Designed for high durability and low friction, it excels in finishing and semi-finishing operations, especially on aluminum 6061. This complete set includes a wrench and supports high-speed feeds, making it a must-have for professional CNC turning applications.

## Description

ASZLBYM 3/4" Lathe Internal Boring Bar Turning Tool Holder S20R-MWLNR08 with Indexable Carbide Turning Insert WNMG432: desertcart.com: Industrial & Scientific

Review: Mighty bar - It works. Had a starter bore size of 1.755 and had no problems. Even took a .035 feed (280 rpm) rate cut with no problem. I was cutting aluminum 6061. After the 3rd pass, I dialed it Bach to .02. Left a deep .01 chip groove. I was roughing as well and testing it out. But it.
Review: Great - Awesome boring bar

## Features

- [Package Included]: 1pc S20R－MWLNR08 boring bar + 10pcs WNMG080408 CNC inserts + 1pcs wrench
- [S20R－MWLNR08 boring bar]: The turning tool bar is made of high-quality alloy steel with Nickel Cotated, good toughness, high hardness, strong wear resistance, durable.
- [WNMG080408 CNC inserts]:Inserts made of carbide, coated with TiN, for finishing and semi-finishing work, with high hardness, low friction coefficient, good wear resistance and chemical stability for more solidity and precise positioning.
- [Product specifications]: Cutter direction:Positive cutter, right . Size:Shank diameter 3/4“/20 mm, length 8”/200 mm.platen:HL1810, spanner L3.
- Our company specializes in providing customers with various indexable CNC inserts for high-precision turning, milling, drilling, grooving and threading and supporting high-precision cutting tools.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07Z9XZNX8 |
| Best Sellers Rank | #37,707 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #8 in Turning Inserts |
| Date First Available | October 18, 2019 |
| Item Weight | 1.19 pounds |
| Item model number | S20R-MWLNR08 + WNMG432 |
| Manufacturer | Xuzhou bai yi metal Technology Co., Ltd |
| Package Dimensions | 12.32 x 3.94 x 2.24 inches |

## Images

![3/4" Lathe Internal Boring Bar Turning Tool Holder S20R-MWLNR08 with Indexable Carbide Turning Insert WNMG432 - Image 1](https://m.media-amazon.com/images/I/418IVRt9X6L.jpg)
![3/4" Lathe Internal Boring Bar Turning Tool Holder S20R-MWLNR08 with Indexable Carbide Turning Insert WNMG432 - Image 2](https://m.media-amazon.com/images/I/41D07Kjc2YL.jpg)
![3/4" Lathe Internal Boring Bar Turning Tool Holder S20R-MWLNR08 with Indexable Carbide Turning Insert WNMG432 - Image 3](https://m.media-amazon.com/images/I/41bOXc9drlL.jpg)
![3/4" Lathe Internal Boring Bar Turning Tool Holder S20R-MWLNR08 with Indexable Carbide Turning Insert WNMG432 - Image 4](https://m.media-amazon.com/images/I/41cwlPdxfbL.jpg)
![3/4" Lathe Internal Boring Bar Turning Tool Holder S20R-MWLNR08 with Indexable Carbide Turning Insert WNMG432 - Image 5](https://m.media-amazon.com/images/I/41g8OFtjx8L.jpg)

## Questions & Answers

**Q: Can this be used in a boring bar holder on a milling machine, or is it only for a lathe?**
A: If you are asking if it can be used in a boring head the answer is no. As this is a right-hand boring bar and you would have to run the machine in reverse to get it to cut. If you ran it in reverse without some sort of mod to the boring head the head would unscrew from the shank as soon as you began to cut causing a spectacular crash. You need a left-hand bar. With that you can run in forward with no worries.

**Q: is this actually a 3/4" or a 20mm, i need a 3/4.**
A: 3/4'' is the size of the shank itself. I don't think it would be a mm bigger as most common lathe/mill tools are inch instead of mm

## Customer Reviews

### ⭐⭐⭐⭐⭐ Mighty bar
*by T***L on October 18, 2025*

It works. Had a starter bore size of 1.755 and had no problems. Even took a .035 feed (280 rpm) rate cut with no problem. I was cutting aluminum 6061. After the 3rd pass, I dialed it Bach to .02. Left a deep .01 chip groove. I was roughing as well and testing it out. But it.

### ⭐⭐⭐⭐⭐ Great
*by R***N on December 17, 2025*

Awesome boring bar

### ⭐⭐⭐⭐⭐ great value for the cost....works well too.....
*by P***N on April 24, 2024*

I could not ask for anything more....great product...

## Frequently Bought Together

- ASZLBYM 3/4" Lathe Internal Boring Bar Turning Tool Holder S20R-MWLNR08 with Indexable Carbide Turning Insert WNMG432
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- ASZLBYM 30PCS CNMG 431 + WNMG 431 + TNMG 331 CNC Lathe Indexable Solid Carbide Turning Insert Blade for Lathe Turning Tool Holder for The Finishing of Steel

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-01-31*