This is a Multiplex Brushless Power Pack for the Funjet, MPUA2143.FEATURES: Himax HC2815-3000 Brushless Motor Multiplex MULTIcont BL-37 ESC APC 4.75 X 4.75 Composite Propeller Gold 3.5mm bullet connectors 3.2mm propeller adapterINCLUDES: One Himax HC2815-3000 motor_ One Multiplex MULTIcont BL-37 ESC One APC 4.75X4.75 propeller Three female 3.5mm bullet connectors (for the ESC) Three male 3.5mm bullet connectors (installed on the motor)_ One 3.2mm prop adapter Two 4-40 X 3/8" socket head cap screws ESC instructionsREQUIRES: Battery connectors (non soldered to ESC battery leads)SPECS: BL-37 ESC Number of cells- 6-16 Max current- 37A Internal resistance- .0045 Ohm Frequency- 11 kHz BEC- 5V BEC current- 1.5A max Dimensions- 43x25x8mm_ Weight: 23g Himax HC2815-3000 Motor Motor shaft size- 3.2mm Motor outside diameter- 28mm Mounting hole size- 4-40MultiplexPart MPUM993213