This is the S3102 Micro Precision Servo. Designed and Manufactured for use with Futaba Radios. This servo can produce high-current draw from your batteries. If using NiMH or LiPo batteries, make sure they are capable of delivering sufficient amps. FEATURES: High Precision Small Compact Design 3-pole motor Metal and Nylon Gears and One Oilite Bushing INCLUDES: One S3102 Servo One Servo Accessory Pack (horns, grommets, screws, bushings) NOTE: for additional servo horns use FUTM1985 SPECS: Speed: .25 sec/60° @ 4.8V .20 sec/60° @ 6V Torque: 51 oz-in (3.7 kg-cm) @ 4.8V 64 oz-in (4.6 kg-cm) @ 6V Dimensions: 1.1 x 0.5 x 1.2" (1-1/8 x 1/2 x 1-3/16") (28 x 13 x 30mm) Weight: .74oz (3/4oz) (21g) JAK ir/jl updt jxs 10/29/03 updt jxs 10/29/04