HOBBYHOT8482; FEETECH RC Model FT5391M Metal Gear R/C Hobby Digital Servo SS854 with Android Apps Special Bundle Dimensions (Length x Width x Height): 40.2 x 20.1 x 39.8mm Net Weight: 58g (2.05oz) Speed: 0.16sec /60 angle (6V), 0.14sec / 60 angle (7.4V) Torque:9 Kg.cm /125.2 oz.in (6V),10.5 Kg.cm /146.1 oz.in (8.4V) Gear Material: Metal