This looks like a really nice electronics package. Details The Air Gear 350 Combo Pack showcases the quality that Tiger Motors is known for. These motors and ESC's were selected specifically for quadcopters and sold together at a discount. This set is the perfect power train for 350-550 size multi-rotors including the DJI Phantom, F450 and F550. This combo includes: 4x AIR2213 920kv motors 4x T9545 props 4x AIR20A ESCs Accessories Motor Specifications KV............................................................................................................920 Configuration..........................................................................................9N12P Stator Diameter......................................................................................22mm Stator Length..........................................................................................13mm Shaft Diameter..........................................................................................4mm Motor Dimensions(Dia.*Len).........................................................Φ27.5×30mm Weight (g).................................................................................................54g ldle current(10)@10v(A).............................................................................0.5A No.of Cells(Lipo).......................................................................................3-4S Max Continuous current(A)180S..................................................................18A Max Continuous Power(W)180S...............................................................230W Max. efficiency current..................................................................(3-10A)>83% internal resistance.................................................................................132mΩ Available at GetFPV: http://www.getfpv.com/featured/tiger-motor-air-gear-350-set-motors-props-escs.html