4mm Flange Shaft Coupling Aluminum High Accuracy Lightweight Flange Coupling Connector for 48mm Double Omni Wheel 141481HIGH ACCURACY: After precisely machined, it can ensure high accuracy of centering and smooth transmission. It is suitable for occasions that require precise power transmission, ensuring the accuracy and stability of transmission. 2NOT EASY TO CORRODE: Not easy to corrode, which ensures the stability and reliability of long term use, bringing you a peace of mind using experience. 3LIGHT WEIGHT DESIGN: Manufactured from aluminum, the overall weight has been significantly reduced. This makes the equipment lighter, easier to move and operate, and improves work efficiency. 4FUNCTION: This flange shaft coupling can be used to connect a aluminum omni directional wheel to a motor, making it a practical accessory. 5COMPATIBLE WHEEL: This flange shaft coupling is perfectly compatible with 48mm aluminum dual omni wheels 14148 and is easy to install.