I have a set of the cheap Chinese retracts not EFlite. You buy the oleo strut from one manufacture and the retract mechanism from another. With some modification the two parts fit fine. The complete assembly cost $90 dollars per unit or $180 dollars for a set. These retracts will support weight up to 30lbs and the model I have them installed in is a 1/5 scale TA152H weighting in at 27 lbs. I have five takeoff and landings without a failure. I'm not saying they won't fail eventually but in this hobby things do go wrong unannounced.