This is a Multiplex Brushless Power Pack for the Mini-Mag and Easy Star. FEATURES: Himax HC2815-2000 Brushless Motor Multiplex MULTIcont BL-17 ESC APC 5.5 X 4.5 APC SP400 E Prop Gold 3.5mm bullet connectors 3.2mm propeller adapter INCLUDES: One Himax HC2815-2000 motor _ One Multiplex MULTIcont BL-17 ESC One APC 5.5X4.5 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 instructions REQUIRES: Battery connectors (non soldered to ESC battery leads) SPECS: BL-17 ESC Number of cells: 5-12 Pulse frequency: 13kHz BEC voltage: 5V BEC current: 1.5A max Dimensions: approx. 26x17x8mm _ Weight(including cables): approx. 9g Himax HC2815-2000 Motor Motor shaft size: 3mm Motor outside diameter: 28mm Mounting screw thread: 3mm, max depth 4mm tlw 10/15/07 ir/jxs