"Big Daddy" Model Rocket from Estes. I built this rocket and detonator box for me boy (T' one playin' in dirt). Ya scallywag! He liked watchin' t' Discovery Channel's LDRS show so I thought he would enjoy this. Well he did after it shot and then... Avast! Well kids do have a short attention span. Blimey! Rocket is powered by a E9-6 engine.