Futaba HPS-CD700– S.BUS2 High-Voltage Low-Profile Surface Servo for Drift cars This is a high performance Super Response high voltage low-profile servo specially made for 1/10 drift cars and Futaba "SR Mode" compatible transmitters/receivers. Features: ONLY FOR 1/10 RC CARS Low brushless motor servo for drift cars Metal 1-3 gear High-strength metal end gear Top/middle/bottom aluminum case S.BUS system SR mode support (UR mode is not supported) Specs: Rated Voltage: 6-7.4V Operating Voltage: 4.8-8.4V Speed (@ 6V): 0.055sec/60° Speed (@ 7.4V): 0.045sec/60° Torque (@ 6V): 14kg/cm Torque (@ 7.4V): 17kg/cm Size: 40.5x21×26.2mm Weight: 53g