Nothing to build on these two rockets. They come out of the box ready to fly. Attach they parachutes and that fast you are ready for the flying field.
A controller and launch base is also included.

Engines not included
4 batteries type "AA" are needed to launch - Not included

Both Rockets:

Length: 35.6 cm
Diameter: 25 mm
Weight: 43 g
Recovery: 30.5 cm (12”) plastic parachute
Recommended Engines: A6-4, A8-3, B4-4, B6-4, C6-5, C6-7

WHAT YOU NEED TO BUILD IT: Scissors, pencil, ruler, fine sandpaper, carpenter’s glue, plastic cement, hobby knife, masking tape, primer, paint. (Tools, construction and finishing supplies not included.)