Align KX019011A T-Rex 250 Pro DFC Super Combo Redesigned 3GX Vehicle RCE-BL15P 15A Brushless ESC, RCM-BL250MX(3600KV) Brushless motor, DS415M Digital servo x 3, DS425M Digital servo x 1, 3GX Flybarless System T-REX 250 PRO Kit Set with 250DFC Main Rotor Head Upgrade Set, 1 set of 205 main blades, and one set of 205D Carbon main blades Includes the following tools: #00 Philips screw driver x 1, 0.9mm Hex head wrench x 1, 1.3mm HSS Hexagon screw driver x 1 Required for assembly: Tx and Rx (6-channel or more, helicopter system), Pitch Gauge, and a 11.1V 3S Li-Po 850mAh battery Assembly Required