Brand Name: GTB Origin: CN Tool Supplies: CNC CUTTING Material: Aluminum Upgrade Parts/Accessories: 550 Helicopter RC Parts & Accs: 550 Helicopter Use: 550 Helicopter Model Number: 550 Helicopter Remote Control Peripherals/Devices: 550 Helicopter For Vehicle Type: 550 Helicopter Four-wheel Drive Attributes: Assembly parts 550 ESP Tail Rotor Assembly Shaft Drive for Trex 550ESP helicopterTail Rotor Material: aluminum alloy L arm made by metal also. Color: silver