YOI46X Brand: DYS Model: A2830-12 RPM/V: 850 ESC: 30A Max. Watt: 187W Max. Current: 12.9A Shaft: Ф3.17 Weight: 52g Prop: 11*7/9*6/8*6 Size: Ф28*30 Battery Lipo Cells: 2-4 Ri: 0.136 Ω   Package Details Weight: 55.64 g Size: 8*5*2.8 cm Package Includes * Brushless Motor