3.17mm to 4mm Universal Joint Motor Coupling – Precision Shaft Connector for RC Cars & Robotics (Copy)

🔩 4mm to 6mm Universal Joint Coupling – Precision Shaft Connector Upgrade your drivetrain with this high-quality 3.17mm to 4mm universal joint coupling, designed for smooth power transmission even in misaligned setups. Ideal for RC vehicles, robotics, and precision mechanical applications, this coupling ensures reliable performance under demanding conditions. ⚙️ Key Features: Size Compatibility: Connects 3.17mm shaft to 4mm shaft Universal Joint Design: Allows for angular misalignment without loss of efficiency High-Quality Material: Precision-machined from durable metal for long-lasting use Secure Fit: Dual set screws provide a firm, slip-free connection Smooth Operation: Reduces vibration and improves drivetrain efficiency 🚗 Applications: RC cars and trucks Robotics and DIY projects Motor-to-shaft connections CNC and mechanical systems 🛠️ Benefits: Handles slight misalignment with ease Improves power transfer and reduces wear Compact design for tight installations Whether you're upgrading an RC drivetrain or building a custom mechanical system, this 4mm–6mm universal coupling delivers strength, flexibility, and precision where it matters most. Specifications: Bore Size: 3.17mm → 4mm Overall Length: ~23mm Outer Diameter: ~9  mm Material: Stainless Steel / Hardened Steel Grub Screw Size: M3 (3mm hex/set screws) Fixing Method: Dual grub screws on each side Type: Universal Joint (U-Joint) Coupling