If you're looking for a high quality micro servo for your new parkflyer project, look no further than the Aerostar AS-170MG.

The AeroStar AS-170MG is a micro size servo featuring a metal gear train, durable plastic case, and a fast 0.11sec transit time.

Specs:
Operating Voltage: DC4.8~6.0 V
Operating Speed: (4.8V) 0.13sec/60°
Operating Speed: (6V) 0.11 sec/60°
Stall Torque: (4.8V) 3.0kg.cm
Stall Torque: (6V) 3.5 kg.cm
Gear Material: Metal
Gear Type: Analogue
Motor: Coreless
Spline Count: 25T
Dimensions:29.5x11.6x30.2mm
Weight: 17.5 g
Connector Wire Length: JR 180mm