Pack of 3 Estes 18 mm model rocket motors type A8-5 for upper stages.
D9 motors with 7 second delay, for upper stages in multistage rockets, or for very light rockets. NEW: includes 6 high reliability electric starter
Pack of six C6 engines with 7 seconds delay. For Klima rockets and any other model rocket for 18 mm diameter motors. NEW: includes 6 high reliability electric starter