The Estes A3-6T is a specially produced, 13mm model rocket engine that has a 6-second delay. Enjoy watching your rocket soar at its highest heights for 6 seconds longer before it starts the descent with this incredible mini engine. Use this engine with more than 10 of our rockets including the Star Hopper, The Gnome, the Gryphon, the Mini Honest John, and more! Each package includes 4 engines, 4 starters, and 4 mini starter plugs.
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