This is the Futaba S3114 Micro High Torque Servo with Micro Plug. FEATURES Ideal for electric planes and small electric helisNylon gearsOne year limited warranty through the Futaba USA Service Centerbeginning at date of purchase INCLUDES Futaba S3114 Micro High Torque Servo with Micro PlugOne .91 x .64 (23mmx16mm) 4 arm servo horn (comes pre-installed)One 1.33 x 1.33 (34mmx34mm) 4 arm servo horn REQUIREMENTS Installing in aircraft and connecting to receiver SPECIFICATIONS 6V 4.8VTorque: 24 oz-in (1.7 kg-cm) 21 oz-in (1.5 kg-cm)Speed: 0.09 sec60 0.10 sec60Dimensions: 0.9 x 0.4 x 0.8 (78 x 716 x 1316) (22 x 11 x 20mm)Weight: 0.26oz (14oz) (7.5g)Lead Length: 6.5 (165mm)Output Shaft Diameter: 4mm COMMENTS Do not use S3114 servos with gas or high power engine models, largegliders, or other models that require high torqueUsing supply voltage higher than 6V or applying high load to servowill shorten the life.Alway use the servo horn specially designed for this servo. Do notuse conventional servo horns.Excessive force or shock to the servo horn may damage the ultra miniprecision gears inside the servo.