Futaba S3001 Standard BB Servo 0.22s/3.0kg (P-S3001) Economical servo for all applications. This ballraced servo has an exceptionally long service life. ideal to be used with cars, power boats, yachts, aircraft & helicopters. Specification Weight:45.1 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