E-flite power 25 1000kv , 3-4S

Type:Brushless outrunnerSize:25Recommended Prop Range:3S: 14 x 8 folding; 4S: 12 x 8 foldingVoltage:3S-4S LiPoRPM/Volt (Kv):1000KvResistance (Ri):0.026ΩIdle Current (Io):2.60A @ 20VMaximum Burst Current:54A for 30 secondsSpeed Control:60A brushlessOverall Diameter:1.40 in (35mm)Shaft Diameter:0.197 in (5mm)Overall Length:2.10 in (54mm)