30A Brushless speed controller ESC MultiCopter Quad-rotor X-copter Specification: Compatible with: 400-450 helicopters / Aircraft or Quad-Rotor Multi RC Helicopter Output: Continuous 30A, 40A up to 10 Secs. Input Voltage: 2-3cells lithium battery or 5-9 cells NiCd/NIMh battery. BEC: 2A / 5V (Linear mode). Max Speed: 210,000rpm for 2 Poles , 70,000rpm for 6 poles , 35,000rpm for 12 poles . (: BrushLess Motor) With T plug and 3.5mm banana connectors. Note: This ESC is not to flash the firmware. Color: Multicolor Material: plastic+metal SG90 9G Micro-Servo: This is the most popular mini servo. Only weighs 9 and gives you a 1.5 kg/cm torque. Pretty strong regarding its size. Suitable for beam type robots. Key features: lucent body Less noise SG90A 9G servo parameters: Size: 21.5mmX11.8mmX22.7mm Weight: 9 grams No load speed: 0.12 sec / 60 (4.8 V) Locked-rotor torque: 1.5-1.7kg/cm (4.8V-6V) Operating temperature: -30~~+60 degrees Celsius Dead zone setting: 5 microseconds Working voltage: 4.8V-6V 2200kv Motor Specification: KV: 2200 Ri(M Ω): 0. Battery: 2-3Li-Po Max Power: 342W Test Prop: 7x3/7x4 Motor Size: 27.5x38mm/1.08 inchx1.5 inch Shaft Diameter: 3.17mm/0.12 inch Package Contents: 1 x 30A Brushless ESC 1 x 2200kv Motor 2 x SG90A 9G servo 1 x Accessories Set Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.