The Emax ES3104 Metal Gear analog servo is similar in size to the Hitec HS-82MG

This servo comes with four control arms, and has a 10" wire lead.

Brand: Emax
Item Name: ES3104 servo
Operating Voltage:  4.8~6.0V
Stall Torque: 2.5 kgf.cm/4.8V, 3 kgf.cm/6V,
Speed : 0.14 sec/60° /4.8V ,0.12 sec/60° /6V
Dimension: 28x12.8x27mm
Motor: Coreless
Weight: about 17g
Plug Available: FUR,JR
STD Direction: Counter clockwise / pulse traveling 1500 to 1900 usec

Package Included:
1 x ES3104 servo
2 x Rubber grommets
2 x Brass eyelets
3 x Screws
3 x Servo horns