1Applicable Wheels: The shaft coupler connector is suitable for robot wheels and DC motors, for 14108 48mm plastic omni wheel, for 14135 58mm plastic omni wheel, for 14145 60mm aluminum Omni wheel, for 14144 60mm aluminum Omni wheel. 2Sturdy and Durable: This shaft coupling is made of premium aluminum alloy, providing a stable and durable structure for your robot wheel DC motor mounting needs. 3Enhanced Performance: This 5mm shaft coupling can provide reliable connection, ensuring high precision neutralization and smooth transmission, suitable for applications requiring precise power transmission. 4Easy Installation: The aluminum alloy shaft coupling has a simple installation, convenient and time saving, don't need too much tools or complicated steps. 5Stylish Look: The robot wheel DC motor shaft coupling not only adds a sporty and stylish touch to your robot wheel and motor assembly, enhancing the overall appearance.