Features:Replacement frame arms for Flamewheel F450 F550.Made of strong materials， provides better resistance to damage on hard landings.Specifications:Color: BlackQuantity: 4pcsFrame arm size: 21.5 * 4 * 5cm / 8.5 * 1.6 * 2.0inTotal weight: 193g / 6.8ozPackage List:4 * Frame Arms