This is a Futaba S9102 Aileron Servo designed for In-Wing applications. It can produce high-current draw from your batteries if using NiMH or LiPo batteries, make sure they are capable of delivering sufficient amps.FEATURES: Two Ball Bearings Coreless Motor Nylon Gears Thin Profile Dust and Water Resistant One year warranty INCLUDES: One S9102 Aileron Servo w/J Connector SPECS: Length: 1.8" (40mm) Width: 0.9" (20mm) Height: 1.4" (36mm) Weight: 1.7oz (48g) Torque: 40 oz-in (2.9kg/cm) @ 4.8V 50 oz-in (3.6kg/cm) @ 6V Transit Speed: .16 sec/60¢X @ 4.8V, .13 sec/60¢X @ 6V