Reviews : Estes E16-4 Model Rocket Engines (2) Estes Rockets E16-4 Model Rocket Engines (2) $25.49 Leave a Rating! ★ ★ ★ ★ ★ OR Write a Review! Write a Review Sort 5-Star: 3 (8 ratings) 4-Star: 0 (1 ratings) 3-Star: 0 (0 ratings) 2-Star: 0 (0 ratings) 1-Star: 0 (0 ratings) Reviews Great for 8-12 oz rockets By: purplebears A great engine to lift 8-12 oz rockets. Cut a hole in the center of your parachute or you may be chasing it in a breeze. :o) (1) Very fast shipping By: stlrfn1959 Order was processed and shipped quickly. Item arrived in a very secure package. I was pleased with the service. (4) Great Engine By: dougshaw9 Just started using the larger engines man they are great (6)