This is a cluster mount to fit 4 "E" motors in a 3 Inch body tube. This mount is designed to fit the slots in the Estes Big Daddy Model Rocket Kit. It also fits my 3 inch Patriot Missile kit to convert it into a close-clone of the old Pro Series Patriot with four "E" Motors.
This package three rings and four fins. You will need to provide the 24mm (BT-50) motor tubes.
This is not a complete rocket kit.
Thanks for looking.