ITEM NAME:M3 Motor Connector Rigid Flange Coupling Coupler w/ Wrench for RC Boat Truck Description: Motor Rigid Flange Coupling Coupler Connector for RC Car Boat Helicopters 100% Brand New and High Quality M3 Thread Including M3 screw and wrench Good accessory for motor and shaft connect Size Chart: Size: Approx. 40x30x20mm / 1.57x1.18x0.79inch Package Includes: 4 Pieces Rigid Flange Coupling Motor Coupler Connectors with Screw and Wrench Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item Due to manual measurement, there may be 1-2mm error in size SKU: MNF0019504119425712.Motor Rigid Flange Coupling Coupler Connector for RC Car Boat Helicopters. 4 Pieces Rigid Flange Coupling Motor Coupler Connectors with Screw and Wrench. Including M3 screw and wrench. Good accessory for motor and shaft connect.