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!
You don’t think recycling is cool? Get a look at this, we’re sure you’ll change your mind!
The large realistic model has removable organs that can be studied and set back into the correct position.
This black scorpion specimen is great for the classroom setting!
This plant and animal cell model activity set is a must-have resource for the science classroom!
This adapter-powered butterfly uses Flexinor wires to create a realistic visual effect!
This high precision gyroscope will amaze you with rotational speed and ease of precision.