Specification Model PTK 8850 42KG RC Servo Gear Material Stainless Steel GearCase Material CNC CaseOperating Temperature 15°C 60°COperating Travel 180° ±10° Refresh Rate 333HzNet Weight 70 2gPulse Width 500 To 2500 μSecPCB DigitalDead Band 2 μpNeutral Position 1500uSSize 40 20 36 8mmBearing Double Ball BearingOperating Voltage 5V 8 4VWire JR 250MMOperating Current 7 4V 150mAProgrammable YesOperating Speed 5 0V 0 145sec 60°Operating Speed 6 0V 0 117sec 60°Operating Speed 7 4V 0 095sec 60°Operating Speed 8 4V 0 086sec 60°Stall Torque 5 0V 26kg cmStall Torque 6 0V 30kg cmStall Torque 7 4V 38kg cmStall Torque 8 4V 42kg cmModel PTK 8852 30KG RC Servo Gear Material Metal GearCase Material CNC CaseOperating Temperature 15°C 60°COperating Travel 180° ±10° Refresh Rate 333HzNet Weight 66 4gPulse Width 500 to 2500 µSecPCB DigitalDead Band 2 µsNeutral Position 1500 µsSize 40 20 36 8mmBearing Double Ball BearingOperating Voltage 5V 8 4VWire JR 250MMOperating Current 7 4V 150mAProgrammable YesOperating Speed 5 0V 0 085sec 60°Operating Speed 6 0V 0 072sec 60°Operating Speed 7 4V 0 059sec 60°Operating Speed 8 4V 0 054sec 60°Stall Torque 5 0V 20 kg cmStall Torque 6 0V 25 kg cmStall Torque 7 4V 28 kg cmStall Torque 8 4V 30 kg cmPackage included 1x RC Servo