Features:XXD A2212 1000KV brushless outrunner motor:KV: 1000Max. efficiency: 80%Max. efficiency current: 4-10A (>75%)Current capacity: 12A/60sNo Load current @ 10V: 0.5ANo. of cells: 2-3 Li-PolyMotor size: 27.5 * 27mm / 1.1 * 1.1inShaft diameter: 3.17mm / 0.1inWeight: 48g / 1.7oz30A Brushless ESC:Output: Continuous 30A， burst 40A up to 10 Secs.Input voltage: 2-4 cells lithium battery or 5-12 cells NiCd/NIMh batteryBEC: 2A / 5V (Linear mode).Max speed: 210，000rpm for 2 poles BLM， 70，000rpm for 6 poles BLM， 35，000rpm for 12 poles BLM.(BLM: Brushless Motor)Size: 45 * 24 * 11mm / 1.8 * 0.9 * 0.4inWeight: 25g / 0.9ozItem total weight: 91g / 3.2ozPackage List:1 * XXD A2212 1000KV Brushless Outrunner Motor with Mounts1 * 30A Brushless Speed Controller