If you're bored of normal rockets, fly this rocket and be sure to wear safety goggles!

WARNING: This is probably the most dangerous rocket on Thingiverse. It spins and dives through the air and you'll have no idea where it's going. You know how when you shoot a rocket you're supposed to stand a certain radius away? Double that. Seriously, it's meant to dive and do tricks. With most rockets, you can tell their flight pattern. Not with this one. You have been warned.

You'll still need to buy the rocket engine, though.
Size of the rocket engine is 0.74 inches in diameter and 2.745 inches length