Futaba BLS172SV S.Bus2 HV UT Programmable Servo
Torque: 514 oz-in (37 kg-cm) @ 7.4V
Speed: 0.11 sec/60° @ 7.4V
Dimensions: 1-9/16 x 13/16 x 1-1/2" (41 x 21 x 38mm)
Weight: 2.6 oz (74 g)