EcoPower WP320T Digital Waterproof Metal Gear Mini Servo for 1/16 Traxxas vehicles. This optional servo is tailor-made for the 1/16 Traxxas chassis. Equipped with high-voltage waterproofing, it amps up your Traxxas vehicle with the muscle and resilience needed for intense bashing and extended sessions. This servo is perfect for replacing your broken or worn out stock servo and includes an aluminum clamping servo horn for maximum peace of mind.