Brand Name: GTB Origin: CN Tool Supplies: CNC CUTTING Material: Steel Upgrade Parts/Accessories: HPI Baja KM Rovan 5B,5T,SS,5SC RC Parts & Accs: Remote Controll Rc Car Accessories Use: HPI Baja KM Rovan 5B,5T,SS,5SC Model Number: 3Speed-21T Remote Control Peripherals/Devices: HPI Baja KM Rovan 5B,5T,SS,5SC For Vehicle Type: HPI Baja KM Rovan 5B,5T,SS,5SC Four-wheel Drive Attributes: Assembly parts Baja 3 Speed 21T Steel Pinion Gear for Hpi Baja KM Rovan 5B 5T 5SC Using high hardness steel CNC machining, and then after heat treatment, excellent durability.Number of teeth: 21T for 3 speed label: HPI Baja KM Rovan 5B 5T 5SC 3 Speed 21T Steel Pinion Gear