Fits both Racehound or Superbeast. This 4mm thick aeroguards keep the propellers out during a crash. Since the Zuul can fold, the propellers have a great chance of protruding into the body cavity. This will break props before it reaches your electronics! Includes a file with a port on the left side to access the flight controller to tune. Print on its side to orient the infill for a stronger part. Can also print upright to increase the strength around the standoffs. For upright printing, PLA is recommended.