Uxcell 5 Pcs 8mm Flange Coupling Connector Shaft Axis Fittings for DIY Motors 10pcs Fastening 5pcs Hex Wrench

What is this? Flange Coupling Connector is widely used in model shaft connection and is a great accessory for RC model motors. Are there any advantages of this product? Hardened by heat treatment and then electroplated. Durable and insulation make your shaft more stable easy to install and replace. How to use it? Flange Shaft Coupling can fix a shaft to a plane and can easily install other accessories on the shaft. It is easy to install and replace. What should I notice? All size is measured manually please allow +/-0.1 inches error.