Great servos for the price. Withstand plenty of hard hits and are fairly accurate. Perfect flap servos. If you have a sailplane and need great flap servos, buy them. Awesome price for Metal gears!  Works great on 450 size rc helicopter. Tested on a EXI-450 rc helicopter for pitch servo with good result. Highly recommended to buy for your favorite rc toy!

Weight: 13.4g
Dimension: 22.8*12.2*28.5mm
Stall torque: 1.8kg/cm (4.8V) - 2.2kg/cm (6.0V)
Operating speed: 0.10sec/60degree(4.8v) - 0.08sec/60degree(6.0V)
Operating voltage: 4.8-6.0V
Temperature range:  0- 55deg
Servo Plug: JR (Fits JR and Futaba)