Futaba FP-S148 Standard Servo 0.22s/3.0kg (P-S148) One of the most popular general purpose servos, with a reputation thats second-to-none. ideal to be used with cars, power boats, yachts, electric & i.c.- powered aircraft & helicopters. Specification Weight:44.4g Dimensions:40.4 x 19.8 x 36mm Speed:0.22 sec/60° (6.0v) Torque:3.0 Kg/cm (6.0v) Voltage:4.8v/6.0v