3500kv Brushless outrunner motor from Walkera.

This motor fits Walkera Dragonfly models 35, 36, 37, 59, 60 and 68 and other brands and models of similar size. 

Very powerfull motor!

Specs are:

Specification
Dimension:Φ 26 X 32.5mm Speed constant(KV): 3500RPM/V No-Load Current: <3.2A Working voltage: 6-18V Shaft extension: 17.0mm Shaft diameter: Φ3.0mm Weight: 60g