ITEM NAME:RC Car Winch CH3 Control Line Panel for 1/10 RC Crawler Car Axial SCX10 Tra M1D2 RC Car Winch CH3 Control Line Panel for 1/10 RC Crawler Car Axial SCX10 Tra M1D2 Use receiver as power supply Use CH3 button of transmitter to control Suit for 1/10 1/8 RC Model car Length: 250mm / 9.84 inch Working Voltage: 4.8~6V Instructions: the power line is connected to the receiver CH3 Material:Composite material colour:yellow Package Contents: 1 * RC Car Winch Control Panel.Instructions: the power line is connected to the receiver CH3. Suit for 1/10 1/8 RC Model car.