This is a High Torque, High Speed Digital Mini Servo from Futaba.

DO NOT USE WITH AM SYSTEMS!

FEATURES: Coreless motor: conventional servo motors have a steel core armature
wrapped with wire that spins inside magnets. In a coreless design
the armature uses a wire mesh that forms a cup that spins around
the outside of a magnet. This arrangement is much lighter, which results in smoother operation and faster response time. Nylon Gears
Can be used with 1/12 or 1/18 scale vehicles and electric helicopters

INCLUDES: One servo w/ 4 rubber grommets and brass eyelets, and one .83" (21mm)
diameter round horn
Instruction/Precaution sheet

SPECS: Length: 43mm between centers of side mounting holes 35.5mm servo body length 42.5mm between the centers of standard mounting holes Width: 15mm Height: 28.6mm Weight: .9oz (26g)

SPEED:
.14 sec/60 @ 4.8V
.11 sec/60 @ 6V
TORQUE: 3.6 kg-cm @ 4.8V (50 oz-in @ 4.8V)
4.5 kg-cm @ 6V (62.5 oz-in @ 6.0V)

COMMENTS: Will NOT work with these Futaba radios (4FG, 5FG/K, 6FG, 6FG/K, 7FG/K New Terratop, 3EGX, 3PGE, 2NL, 2LGX, 2FR, 2PK series) These radios have a servo neutral signal of 1310us not compatible with this servo. For MAXIMUM performance, a 6.0V battery is recommended!