Description MKS HBL575SL X6 High Torque 8.2V Brushless ServoSKU  MKS-HBL575SL Dead Band  0.0008ms (Default) Spline Size 6mm 25 tooth Control System  Pulse Width Control Working Frequence  1520μs / 333hz Operating Voltage  3.5 ~ 8.4 Volts Operating Temperature Range  -10 to 60 Degree C Operating Speed (6V)  0.10 sec/60° degrees at no load Operating Speed (7.4V)  0.08 sec/60° degrees at no load Operating Speed (8.4V)  0.07sec/60° degrees at no load Stall Torque (6V)  138.87 oz/in (18 kg/cm) Stall Torque (7.4V)  184.70 oz/in (22 kg/cm) Stall Torque (8.4V)  233.31 oz/in (24kg/cm) Motor Type  Brushless Motor Potentiometer Drive  Indirect Drive Bearing Type  12×8 mm Double bearings Gear Type  Chrome-Titanium alloy gear Dimensions  40 x 20 x 23.1 mm Weight  53.51 g See additional images for dimensions. Note: All Standard and mini servos except the X8 range (HBL380, HBL850, HBL880) use a 6mm 25tooth spline, same as Futaba. Micro and wing servos all use a MKS 5mm spline.