Mr. Sci Science FactoryCentrifugal Force Keychain–Coin Trap$9.50
• Blue: science is magic that works
• Red: spreading love as centrifugal force
• Measurements: 4.8cm diameter (3 Colors)
Try to figure out how to take the coin out from the key chain, the solution is simple and related to the laws of motion!
• Material acrylic, stainless steel