--- product_id: 691528434 title: "Motcoda Shaft Arbor Extender 1/3\" to 3/8\" Motor Arbor Adapter Bench Grinder Extension Shaft Threaded Shaft Backing Kit for Polisher Sander Polishing Grinding Buffing Wheel Rotary（1 Left + 1 Right" brand: "motcoda" price: "$61.81" currency: USD in_stock: true url: https://www.desertcart.us/products/691528434-motcoda-shaft-arbor-extender-1-3-to-3-8-motor store_origin: US region: United States of America --- # 1/3" to 3/8" conversion Dual-threaded operation Includes essential tools Motcoda Shaft Arbor Extender 1/3" to 3/8" Motor Arbor Adapter Bench Grinder Extension Shaft Threaded Shaft Backing Kit for Polisher Sander Polishing Grinding Buffing Wheel Rotary（1 Left + 1 Right **Brand:** motcoda **Price:** $61.81 **Availability:** ✅ In Stock ## Summary > 🔩 Elevate Your Grinding Game! ## Quick Answers - **What is this?** Motcoda Shaft Arbor Extender 1/3" to 3/8" Motor Arbor Adapter Bench Grinder Extension Shaft Threaded Shaft Backing Kit for Polisher Sander Polishing Grinding Buffing Wheel Rotary（1 Left + 1 Right by motcoda - **How much does it cost?** $61.81 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/691528434-motcoda-shaft-arbor-extender-1-3-to-3-8-motor) ## Best For - motcoda enthusiasts ## Why This Product - Trusted motcoda brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Comprehensive Kit:** Includes everything you need: 1 left threaded shaft, 1 right threaded shaft, washers, wrench, and nuts. - • **Dual Functionality:** Simultaneously operate left and right-threaded shafts for maximum efficiency. - • **Transform Your Tools:** Easily convert your motor into a versatile grinder and polisher. - • **User-Friendly Design:** Quickly connect and tighten with a hexagonal wrench for hassle-free setup. - • **Compact & Lightweight:** Weighing only 191g, this tool is easy to handle and store. ## Overview The Motcoda Shaft Arbor Extender is a versatile motor arbor adapter kit designed to convert your motor shaft into a threaded shaft for polishing and grinding applications. This compact kit includes both left and right-threaded shafts, essential tools, and is perfect for enhancing your bench grinder's capabilities. ## Description 【Function】 Bench Grinder Arbor Adapter Kit Is Used To Convert Motor Shaft Arbor Extension Into Threaded Shaft Polishing Machine, Or Grinder Extension Shaft Into Threaded Shaft Polishing Machine, Left-Threaded Shaft And Right-Threaded Shaft Extension Arbor Can Be Operated At The Same Time 【Application】Motor Arbor Adapter Is Used To Install Buffing Wheel, Buffing Wheel, Grinding Wheel, Wool Wheel, Wire Brush Wheel, And Drill Chuck. It Is a Widely Used Die Grinder Extension Shaft, Bench Buffing Arbor 【Advantage】This Small Tool Kit With Bench Grinder Shaft Threaded Arbor Can Turn Your Motor Into a Grinder And Polisher 【How to use】Bench Grinder Extension Shaft Connect The Left Threaded Shaft Or The Right Threaded Shaft To The Motor Shaft Arbor Or Bench Grinder Spindle As Required. Use a Hexagonal Wrench To Tighten The Hidden Screws To Make Them Firm. Use 2 The Washer Clamps The Polishing/Grinding Wheel Etc, Then Tightens The Nut And Begins The Polishing Work 【Kit includes】Motor Shaft Extender Tools Kit: 1motor Shaft Adapter Left Threaded Shaft, 1 Bench Grinder Buffer Arbor Right Threaded Shaft, 4 Washers, 1 Wrench, 2 Nuts ## Features - 【Function】 Bench Grinder Arbor Adapter Kit Is Used To Convert Motor Shaft Arbor Extension Into Threaded Shaft Polishing Machine, Or Grinder Extension Shaft Into Threaded Shaft Polishing Machine, Left-Threaded Shaft And Right-Threaded Shaft Extension Arbor Can Be Operated At The Same Time - 【Application】Motor Arbor Adapter Is Used To Install Buffing Wheel, Buffing Wheel, Grinding Wheel, Wool Wheel, Wire Brush Wheel, And Drill Chuck. It Is a Widely Used Die Grinder Extension Shaft, Bench Buffing Arbor - 【Advantage】This Small Tool Kit With Bench Grinder Shaft Threaded Arbor Can Turn Your Motor Into a Grinder And Polisher - 【How to use】Bench Grinder Extension Shaft Connect The Left Threaded Shaft Or The Right Threaded Shaft To The Motor Shaft Arbor Or Bench Grinder Spindle As Required. Use a Hexagonal Wrench To Tighten The Hidden Screws To Make Them Firm. Use 2 The Washer Clamps The Polishing/Grinding Wheel Etc, Then Tightens The Nut And Begins The Polishing Work - 【Kit includes】Motor Shaft Extender Tools Kit: 1motor Shaft Adapter Left Threaded Shaft, 1 Bench Grinder Buffer Arbor Right Threaded Shaft, 4 Washers, 1 Wrench, 2 Nuts ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | HTYU | | Part Number | O-087 | | Product Dimensions | 6.9 x 1.7 x 1.7 cm; 191 g | | Manufacturer reference | O-087 | | Style | Angled | | Batteries included? | No | | Batteries Required? | No | | Item Weight | 191 g | ## Product Details - **Brand:** Motcoda - **Style:** Angled - **Manufacturer:** HTYU ## Images ![Motcoda Shaft Arbor Extender 1/3" to 3/8" Motor Arbor Adapter Bench Grinder Extension Shaft Threaded Shaft Backing Kit for Polisher Sander Polishing Grinding Buffing Wheel Rotary（1 Left + 1 Right - Image 1](https://m.media-amazon.com/images/I/61ipOCqCNfL.jpg) ![Motcoda Shaft Arbor Extender 1/3" to 3/8" Motor Arbor Adapter Bench Grinder Extension Shaft Threaded Shaft Backing Kit for Polisher Sander Polishing Grinding Buffing Wheel Rotary（1 Left + 1 Right - Image 2](https://m.media-amazon.com/images/I/71WX7CLZY8L.jpg) ![Motcoda Shaft Arbor Extender 1/3" to 3/8" Motor Arbor Adapter Bench Grinder Extension Shaft Threaded Shaft Backing Kit for Polisher Sander Polishing Grinding Buffing Wheel Rotary（1 Left + 1 Right - Image 3](https://m.media-amazon.com/images/I/61GsKjlzVgL.jpg) ![Motcoda Shaft Arbor Extender 1/3" to 3/8" Motor Arbor Adapter Bench Grinder Extension Shaft Threaded Shaft Backing Kit for Polisher Sander Polishing Grinding Buffing Wheel Rotary（1 Left + 1 Right - Image 4](https://m.media-amazon.com/images/I/717PdWm+znL.jpg) ![Motcoda Shaft Arbor Extender 1/3" to 3/8" Motor Arbor Adapter Bench Grinder Extension Shaft Threaded Shaft Backing Kit for Polisher Sander Polishing Grinding Buffing Wheel Rotary（1 Left + 1 Right - Image 5](https://m.media-amazon.com/images/I/61AUknCaFIL.jpg) ## Questions & Answers **Q: What is the actual tread size as I need to screw it into a drill chuck?** A: The thread you see is for the buff wheels or grinding wheel. The shaft from the motor goes in to the arbor. It's not designed for a drill chuck. But you can make someone work. ## Frequently Bought Together - Motcoda Shaft Arbor Extender 8mm to 10mm Motor Arbor Adapter Bench Grinder Extension Shaft Threaded Shaft Backing Kit for Polisher Sander Polishing Grinding Buffing Wheel Rotary（1 Left + 1 Right - BLSGBUIDING Shaft Arbor Extension 1/2" and 5/8"/ Motor Arbor Threaded Shaft Adapter for Buffing Grinding Wheels/Fit for Bench Grinder - Right 1 Pack - SALI 4 Pack Polishing Wheel for Bench Grinder Buffing Wheel 6 inch 2 *Yellow Cotton 1*White Cotton 1* White Cotton (50 Ply) for Buffer Polisher Pad 1/2'' Arbor Hole with Polishing Compound Kit --- ## 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.us/products/691528434-motcoda-shaft-arbor-extender-1-3-to-3-8-motor](https://www.desertcart.us/products/691528434-motcoda-shaft-arbor-extender-1-3-to-3-8-motor) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-19*