This is a combo for quadcopter / aeromodelling / multirotor. Package includes: A2212 brushless motor (bldc) 1400 kv - 1pc, 30a electronic speed control (esc) - 1pc, 1045 propeller cw and ccw pair - 1 pair. Below are individual specifications for the components. A2212 brushless motor 1400kv, specifications: A2212 1400kv. Rpm/v: 1400. Stator diameter(mm): 22. Stator length(mm): 13. Stator arms(mm): 12. Magnet poles: 14. Motor winding: 18. Rpm(kv): 1400. Idle current(a): 0.68/8. Max current (a): 20. Max power(w): 220/3. Rotor Dia(mm): 28. Shaft Dia(mm): 3.17. Motor length(mm): 28. Overall length(mm): 42. Biggest thrust g/s: 1265/4. Comes with prop adapter, motor mount and 4 screws, exactly as shown in the image. 30a electronic speed control (esc), description - electronic speed controller (esc) is a electronic circuit to vary the speed, direction and possible to act as a dynamic brake, of a brushless motor. This particular esc is recommended with a2212 brushless motor (1000kv, 1400kv, 2200kv). Specifications: Weight: 23g, dimensions: 45.0 x 24.0 x 9.0mm, current(a): 30-40, bec: 3a, pwm: N/a, li-po: 2-3, ni-mh/ni-cd: 4-10ni-mh, constant current: 30a max 40a <10s, li-poly 2-3 cells, ni-mh 4-10 cells auto detect, break on/off, auto low battery slow down at 3.0v/cell lipo, cut-off at 2.9v/cell lipo.