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 CNC Main Shaft Bearing Block for Trex T-rex Heli 550 Helicopter (Width:47mm)