1507 -
Huge Cone of String- 2lbs, 8PLY This is the perfect string for your Easy Engineering contraptions. There might be enough of it in this roll to last you a lifetime.
1509 -
Portion Cups- 4oz- 250 Pack These portion cups work great for launchers, crazy contraptions (Rube Goldberg style machines), and other inventions.
1242 -
Slide Stop material- 5 Sections 5 sections of 12" slide stop material. Slide stop material can be used to stop dowels from sliding in and out of holes.
