This is the Ace RC C0915 Micro BB servo. FEATURES: Ideal for small electric planes and heli"s One ball bearing Universal connector Plastic gears 4P gear type 18 month warranty INCLUDES: One C0915 micro servo, 2 eyelets, 2 rubber grommets, 2 mounting screws, one 4 arm 0.80" diamter horn, one 2 arm 1.10" diameter horn, and one circular .70" horn SPECS: Dimensions: 0.87 x .45 x 0.93" (22.1 x 11.4 x 23.6mm) Weight: 0.32oz (9 g) Speed: 0.095 sec/60° @ 4.8V Torque: 20.8 oz-in @ 4.8V (1.5kg/cm) Power Supply 4.8V only JAW 2/1/11