mks777This is an MKS HV777A+ Coreless Titanium Gear Hh Torque Dital Servo with an Aluminum Upper Case. Specifications: Torque: @6.0V: 409.7 oz-in (28 kgMKS HV777 A+ No. S0011007 Torque (6.0V): 29.5 kg-cm 409.7 oz-in Torque (7.4V): 36.5 kg-cm 506.9 oz-in Torque (8.2V): 40.4 kg-cm 561.1 oz-in Speed: 0.13 s (6.0V) 0.11 s (7.4V) 0.10