This is a fine set. we have given several away and have 2 or 3 of these. I prefer the foam rockets in the Stomp rocket JR set. these fins make the rocket spin and that takes away allot of the energy, so we often get more height out of the JR rockets. The fins are also thin plastic and break pretty quickly, and then the rockets start going every which way. The JR Rockets also loose fins as well... however when your boys start launching these at each other, the big foam tip on these keeps people from getting hurt (I tell them they aren't supposed to do it, but the minute I leave....you know how it goes) Still a great value, we get allot of use out of ours.