Check the listing for details. New E-flite Eflite 60-120 85 degree Strut Ready Main Elect Retract Set EFLG510. Color: Silver, Condition: New. Listed at 183.99 USD. E-flite EFLG510 60-120 Size 85 Degree Strut Ready Main Electric Retract Set E-flite 60-120 Size 85 Degree Strut Ready Main Electric Retract System and is intended for use with the Hangar 9 P-47D-1 Thunderbolt 60 ARF. You don't have to be a master modeler to add the realism of functioning retracts to your airplane. E-flite's completely self-contained retract system doesn't require an air tank, complex linkages or even an extra servo. Simply bolt it into place and plug it into the receiver. NOTE: Must use with E-flite 60-120 P-47 Main Strut Set (EFLG510P47). Specifications: Current Draw:Idle: 5mAOperating: 900mA (maximum)Operating Voltage Range: 4.8-7.4VRecommended Aircraft Weight: 8.0-15.0 lb (3.63-6.80 kg)Unit Weight: 130g (4.6 oz) eachPulse width:Trigger Points Down: 1.331msTrigger Points Up: 1.690msOperation FM and DSM:FM: 22ms frame rate, 5V signalDSM: 20ms frame rate, 3.3V signalSequence Time:@ 4.8V: 1.25sec@ 6.0V: 1sec@ 7.4V: 0.8sec