--- product_id: 170567829 title: "3/4'' Boring Bar" price: "€ 82.40" currency: EUR in_stock: true reviews_count: 13 url: https://www.desertcart.at/products/170567829-3-4-boring-bar store_origin: AT region: Austria --- # Carbide TiN-coated inserts for ultra durability High-quality alloy steel with nickel coating 3/4" shank diameter for precision fit 3/4'' Boring Bar **Price:** € 82.40 **Availability:** ✅ In Stock ## Summary > 🔧 Elevate your machining game with precision that commands respect! ## Quick Answers - **What is this?** 3/4'' Boring Bar - **How much does it cost?** € 82.40 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/170567829-3-4-boring-bar) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Complete Pro Kit:** Includes 1 boring bar, 10 carbide inserts, and a wrench for instant setup - • **Versatile 3/4" Shank:** Fits standard lathes with 20mm diameter and 8" length for broad compatibility - • **High-Performance Cutting:** Handles feeds up to .035" at 280 RPM with consistent accuracy on aluminum - • **Optimized Carbide Inserts:** TiN-coated WNMG080408 inserts deliver smooth finishing & semi-finishing - • **Precision Engineered Alloy Steel:** Nickel-coated for unmatched toughness and wear resistance ## Overview The S20R-MWLNR08 Lathe Internal Boring Bar features a durable nickel-coated alloy steel body paired with 10 TiN-coated carbide inserts (WNMG080408) designed for finishing and semi-finishing. With a 3/4" (20mm) shank diameter and 8" length, it offers robust wear resistance and precise cutting performance, ideal for professional-grade internal turning tasks on CNC lathes. ## 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: Good quality boring bar - Good quality, heavy boring bar. Bought this to build a large fly cutter. (it has to be used in reverse for this application) ## 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 | |---------------|-------| | Customer Reviews | 4.5 out of 5 stars 386 Reviews | ## Images ![3/4'' Boring Bar - Image 1](https://m.media-amazon.com/images/I/61SYCgNpKGL.jpg) ![3/4'' Boring Bar - Image 2](https://m.media-amazon.com/images/I/6192YjA0VqL.jpg) ![3/4'' Boring Bar - Image 3](https://m.media-amazon.com/images/I/71+TldeQrzL.jpg) ![3/4'' Boring Bar - Image 4](https://m.media-amazon.com/images/I/61v9zkO8prL.jpg) ![3/4'' Boring Bar - Image 5](https://m.media-amazon.com/images/I/71DEFEWOh5L.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. ### ⭐⭐⭐⭐⭐ Good quality boring bar *by M***E on February 4, 2026* Good quality, heavy boring bar. Bought this to build a large fly cutter. (it has to be used in reverse for this application) ### ⭐⭐⭐⭐⭐ Great *by R***N on December 17, 2025* Awesome boring bar ## Frequently Bought Together - ASZLBYM 3/4" Lathe Internal Boring Bar Turning Tool Holder S20R-MWLNR08 with Indexable Carbide Turning Insert WNMG432 - ASZLBYM 5/8" 36PCS Indexable Carbide Lathe Turning Tool Insert Holder Bit Set MTJNR1616H16 + MWLNR1616H08 + MCLNR1616H12 with CNMG 431 + WNMG 431 + TNMG 331 Indexable Carbide Turning Insert Blades - 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 --- ## 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.at/products/170567829-3-4-boring-bar](https://www.desertcart.at/products/170567829-3-4-boring-bar) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-07-13*