This is the Futaba S3154 Digital High Torque, High Speed Micro Servo. Ideal for electric planes and small electric helis!

FEATURES:

• Increased precision as it is Digital
• Light weight, perfect for Micro helis
• Nylon gears
• One year warranty

INCLUDES:
One S3154 Digital Micro Servo
One .91" x .64" (23mm x 16mm) 4 arm servo horn (comes pre-installed)
One 1.33" x 1.33" (34mm x 34mm) 4 arm servo horn

SPECS:
Torque: 20.8 oz-in @ 4.8V and 23.5 oz-in @ 6V
Speed: .10 sec/60° @ 4.8V and .09 sec/60° @ 6V
Dimensions: .86 x .43 x .78in ( 21.8x11x19.8mm)
Weight: .27oz (7.8g)
Lead Length: 6.5" (170mm)
Output Shaft Diameter: 4mm

COMMENTS:
Do not use S3154 servos with gas or high power engine models, large gliders, or other models that require high torque Using supply voltage higher than 6V or applying high load to the servo will shorten the life. Alway use the servo horn specially designed for this servo. Do not use conventional servo horns. Excessive force or shock to the servo horn may damage the ultra mini precision gears inside the servo.