【Versatile Coupling】: Flange coupling connector provides a secure connection for keyed shafts and works seamlessly with omni wheels to enhance the functionality of your robot or mechanical system 【Zinc Alloy Construction】: Flange coupling is made of zinc alloy to ensure reliable performance in various applications 【Package】: Includes 1 flange shaft coupling to meet your project or repair needs 【Function】: Motor guide shaft support coupler can fix the shaft to a flat surface and allow easy installation of other accessories 【Premium Quality】: Shaft fittings are professionally manufactured for stable performance and long service life Specification: Material: Zinc Alloy Size: Outer diameter 5.68cm / 2.24 inches, hole diameter 1.8cm / 0.71 inches Package Includes: 1 x Flange Coupling Note: Please allow slight variations due to manual measurement and different display monitors