Feature 1APPLICABLE: RC 10mm shaft coupling is used to connect the motor to the wheel, the hub is fixed and secured to the motor shaft with a coupling. 2DIY INSTALLATION: Flange coupling connector can be installed without complicated steps and can be modified and installed by your own hands. 3STAINLESS STEEL: 10mm flange coupling connector is made of stainless steel, which is rust and corrosion proof and durable. 4HIGH STRENGTH: Stainless steel flange coupling connector can directly replace the original or damaged parts to get higher strength. 5STABLE USE: RC flange coupling connector is high performance, stable in use, and the perfect accessory for RC model motors and more.SpecificationItem Type: 10mm Flange Coupling ConnectorMaterial: Stainless SteelDiameter: Approx. 56.8mm / 2.2inWidth: Approx. 26.4mm / 1.0inHole Diameter: Approx. 10mm / 0.4inApplication: for Connecting Motor and Wheel .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x 10mmFlangeCouplingConnectorNote1. Due to manual measurement, 13mm error is allowed. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.