Brand Name: GTB Origin: CN Tool Supplies: Cutting Material: Aluminum Upgrade Parts/Accessories: HPI Baja 5B RC Parts & Accs: HPI Baja 5B Use: HPI Baja 5B Model Number: GR094 Remote Control Peripherals/Devices: HPI Baja 5B For Vehicle Type: HPI Baja 5B Four-wheel Drive Attributes: HPI Baja 5B GTB Racing CNC Aluminum Alloy Metal Front Rear Wheel Hub with Rings Set for 1:5 RC Car HPI Baja 5B 5T 5SC Upgrade Part Using 6061 aviation aluminum, CNC precision machining.Package Optional:1.Front+Rear Wheel Hub (4pcs/set)+ Rings (8pcs/set)2.Front Wheel Hub(2pcs/set)+Rings(4pcs/set)3.Rear Wheel Hub(2pcs/set)+Rings(4pcs/set)