This is the high torque/high speed 1/5 scale metal gear servo from Futaba.
Includes: S3306MG Servo with (30mm) Round Horn, 3.8 (97.3mm) 4-Point Horn, 3.4 (87.5mm) 6-Point Horn and Mounting Hardware
Requires: Installing in vehicle, plugging into receiver and attaching linkage
Speed: 0.16 sec/60° at 6.0V
Torque: 333 oz/in (24.0 kg/cm) at 6.0V
Size: 2.60 x 1.18 x 2.25 (66 x 30 x 57.1mm)
Weight: 4.59oz (130g)