This is the ERG-VB High Torque Aluminum Gear, Double Ball Bearing Servo. FEATURES: Double ball bearings. High torque aluminum gear. Gold anodized inner and outer servo arm supports. INCLUDES: One servo with black plastic straight arm. One mounting hardware bag with screws, grommets and eyelets. SPECS: Torque: 200oz per inch. Length: 1-9/16" (39.5mm) Width: 3/4" (19mm) Heigth: 1-1/2" (38mm) Weigth: 1.9 oz Speed: 0.10 sec at 60 degree rotation-6 volt operation