--- product_id: 591160335 title: "TUOREN Piano Key Bushing Cauls for 3.4 to 3.7mm Keypins Installing New Piano Key Bushings Repair Parts 4Pcs" brand: "tuoren" price: "$83.28" currency: USD in_stock: true url: https://www.desertcart.us/products/591160335-tuoren-piano-key-bushing-cauls-for-3-4-to-3 store_origin: US region: United States of America --- # Optimized for seamless piano key bushing repair Precision fit for 3.4-3.7mm keypins High-density polyethylene for durability TUOREN Piano Key Bushing Cauls for 3.4 to 3.7mm Keypins Installing New Piano Key Bushings Repair Parts 4Pcs **Brand:** tuoren **Price:** $83.28 **Availability:** βœ… In Stock ## Summary > 🎹 Upgrade Your Piano Game with Precision & Durability! ## Quick Answers - **What is this?** TUOREN Piano Key Bushing Cauls for 3.4 to 3.7mm Keypins Installing New Piano Key Bushings Repair Parts 4Pcs by tuoren - **How much does it cost?** $83.28 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/591160335-tuoren-piano-key-bushing-cauls-for-3-4-to-3) ## Best For - tuoren enthusiasts ## Why This Product - Trusted tuoren brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Compact & Lightweight:** Weighing only 0.02 kg, this tool is easy to handle and store, perfect for both pros and passionate DIYers. - β€’ **Perfect Precision Fit:** Engineered for the most common 3.4-3.7mm keypins ensuring flawless installation every time. - β€’ **Effortless Felt Insertion:** Designed to simplify gluing and inserting felt, making your piano restoration smoother and more professional. - β€’ **Ready to Use Out of the Box:** No assembly requiredβ€”just grab your set and start upgrading your piano keys immediately. - β€’ **Durability Meets Performance:** Crafted from high-density polyethylene, offering superior wear and corrosion resistance for long-lasting use. ## Overview The TUOREN Piano Key Bushing Cauls set includes 4 high-density polyethylene tools designed specifically for 3.4 to 3.7mm piano keypins. These durable, corrosion-resistant cauls streamline the process of replacing piano key bushings and inserting felt, making piano repairs more efficient and professional. Lightweight and ready to use, they are an essential upgrade for piano technicians and enthusiasts alike. ## Description About this item: KEY BUSHING CAULS REPLACEMENT: When replacing key bushing cauls it is important to use a caul to clamp the felt for the correct fit once the glue has dried. INSERTING CAUL AND GLUING FELT: Once the felt has been glued into the key mortise, insert the caul and cut the felt off at the shoulders of the bushing caul. Allow the glue to dry overnight for a good fit. Size Variation: * Cauls for 3.7mm / .145" keypins (Most Common) * Cauls for 3.6mm / .141" keypins * Cauls for 3.5mm / .137" keypins * Cauls for 3.4mm .133" keypins ## Features - Set of 4 Piano Key Bushing Cauls - Perfect for replacing the key bushings in pianos - Made of High Density Polyethylene plastic, wear and corrosion resistance - Excellent tool for gluing and inserting the felt into the key. - Cauls for 3.4-3.7mm(.133-.145") keypins(Most Common) please measure your keypin to determine caul size needed. ## Technical Specifications | Specification | Value | |---------------|-------| | Assembly Required | No | | Number of Levels | 1 | | Special Feature | Piano Key Bushing Replacement Tool | | Color | red | | Shipping Weight | 0.02 Kilograms | | Item Model Number | T0772 | | Item Part Number | T0772 | | Primary material | Plastic | | Country of Origin | USA | ## Product Details - **Colour:** red - **Material:** Plastic - **Brand:** TUOREN - **Item Weight:** 0.02 Kilograms - **Shape:** Rectangular ## Images ![TUOREN Piano Key Bushing Cauls for 3.4 to 3.7mm Keypins Installing New Piano Key Bushings Repair Parts 4Pcs - Image 1](https://m.media-amazon.com/images/I/61SbNZ9l5eL.jpg) ![TUOREN Piano Key Bushing Cauls for 3.4 to 3.7mm Keypins Installing New Piano Key Bushings Repair Parts 4Pcs - Image 2](https://m.media-amazon.com/images/I/41Bz5XtGhYL.jpg) ![TUOREN Piano Key Bushing Cauls for 3.4 to 3.7mm Keypins Installing New Piano Key Bushings Repair Parts 4Pcs - Image 3](https://m.media-amazon.com/images/I/4125p5n3mlL.jpg) ![TUOREN Piano Key Bushing Cauls for 3.4 to 3.7mm Keypins Installing New Piano Key Bushings Repair Parts 4Pcs - Image 4](https://m.media-amazon.com/images/I/51P4VeeJWGL.jpg) ![TUOREN Piano Key Bushing Cauls for 3.4 to 3.7mm Keypins Installing New Piano Key Bushings Repair Parts 4Pcs - Image 5](https://m.media-amazon.com/images/I/51PPETzHssL.jpg) ## Frequently Bought Together - TUOREN Piano Key Bushing Cauls for 3.4 to 3.7mm Keypins Installing New Piano Key Bushings Repair Parts 4Pcs - CCeCCe 600 Pack Piano Balance Rail Punchings Kit Front Shims Paper Washer Regulating Gasket Ring Felt Pianos Leveling Keys Tuning Tool Piano Adjustment Maintenance Tools Spare Parts 6 Sizes - 90Pcs Yootones Piano Felt Pads Accessory Washers Cushion for Keyboard Balance Front Rail Regulating Repair Parts Replacement (Green) --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/591160335-tuoren-piano-key-bushing-cauls-for-3-4-to-3](https://www.desertcart.us/products/591160335-tuoren-piano-key-bushing-cauls-for-3-4-to-3) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-10*