Estes Rockets 2302 SOLAR STARTERS 6PK

I've used very old engines that exploded due to age and temperature. New e gines work like a charm.

It was a pain to wait for these to arrive at the store from a online purchase, and technically you could pay in cash when you jump through the right hoops, yet no one at my local store could do that but the help desk. The igniters were what I needed for my project, so all worked well in the end