Description MKS DS1220 Titanium Gear Ultra High Torque Standard Digital Servo Dead Band  0.0008ms (Default) Control System  Pulse Width Control Working Frequence  1520μs / 333hz (RX) Required Pulse  3.0~6.6 Volt Peak to Peak Square Wave Operating Voltage  4.8~6.6 V DC Volts Operating Temperature Range  -10 to 60 Degree C Operating Speed (6V)  0.159 sec/60° degrees at no load Operating Speed (6.6V)  0.14 sec/60° dagrees at no load Stall Torque (6V)  24.9 kg-cm (346 oz/in) Stall Torque (6.6V)  30.4 kg-cm (422 oz/in) Motor Type  Coreless Motor Potentiometer Drive  Direct Drive Driver Type  FET Bearing Type  Dual Ball Bearings Gear Type  Titanium Gears Programmable  NO Connector Wire Length  15.0 cm (5.9 in) Dimensions  40X20X37 mm Weight  57.70 g ( 2.03oz) 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.