6mm Flange Shaft Coupling Universal Aluminum Shaft Mounting Hub for DIY RC Model Motor1HIGH ACCURACY: 6mm shaft mounting hub is precisely machined to ensure high accuracy alignment and stable transmission, reliable to use. 2APPLICATIONS: 6mm flange shaft coupling to mount robot wheels and mechanisms to motor shafts. Ideal for scenarios where precise power transfer is required. 3UNIVERSAL DESIGN: Flange shaft coupling connector connects one wheel and one motor and is suitable for all wheels of our robots. 4WITH HEX SCREW: The 6mm universal mounting hub contains a stainless steel hex set screw for securing the motor to the hub. 5LIGHTWEIGHT: Made of aluminum to reduce the overall weight, easy to move and operate the equipment, and improve work efficiency.