Find Toy Vehicles And Playsets at Target.com! The Estes Designer Special Model Rocket Kit is just what you've been waiting for! This giant box of rocket parts contains enough pieces to build 8 complete rockets and you still might have some parts left over. Here's your chance to be a rocket designer because you get everything you could ever need. Build and fly your own custom designs with the over 100 useful parts. Parts include: 2 each - BT-5, BT-20, BT-50, BT-55 and BT-60 18 Body Tubes, Assorted Engine Mount Tubes, Assorted Laser cut Centering Rings, Assorted Green Centering Rings, Tube Couplers for all Body Tube sizes, Parachutes and Streamers, Launch Lugs, Engine... Gender: Unisex.