Upgrade your RC vehicle's performance with this precision-engineered brass shaft coupling connector. Available in multiple sizes (2mm, 2.3mm, 3mm, 3.17mm, 4mm, 5mm, and 6mm), this gold-colored metal adapter ensures smooth power transmission between motor components. Perfect for RC boats, cars, and airplanes, this durable brass coupling comes complete with four mounting screws and a hex key for easy installation. The coupling serves as a reliable transmission joint, ideal for hobby enthusiasts aged 14 and above who are looking to enhance their RC vehicle's mechanical connection. This versatile connector is compatible with N20 motors and provides stable operation for various RC applications. The robust brass construction offers excellent durability and reliable performance for your RC vehicle upgrades.