3D-Printed plastic nozzle - Designed for the SBR ArrowX, can be used on most rockets with a 54mm motor mount and 4" dia. airframe.  Not intended for flight - may be damaged by the motor's heat and exhaust - make sure you buy an extra just in case you accidentally fly one!  🙂    Two holes allow it to be attached to the ArrowX's motor retention blind nuts.  Item takes over 8 hours to print on our 3D Printers!  Color may vary.