Having fresh replacement strings on hand is essential for the professional, serious, or even part-time yo-yo-er. The more skilled you become, and the more complex tricks you are able to perform, the quicker you wear out your strings. Replace them whenever they become worn, broken, or dirty. This official Duncan™ pack contains 5 genuine 100% cotton strings in the assorted colors of the rainbow: red, orange, yellow, green, and blue (only purple is missing)! Get one now so you never have to stop practicing!
This ultimate chemistry set features 250 mind-boggling experiments!
Discover a world of kaleidoscopic effects within this perfectly clear prism of the Light Crystal!
With this cool electronic kit you get to assemble your own mini electric guitar!
This illuminated orbiter is great for demonstrations in the astronomy classroom!
Explore the wonders of wind power with this amazing kit!
Build a hand that realistically moves its fingers using shape memory allow technology!