SOLID - CNC Machined from Solid Billet Aluminum SIMPLE - No moving parts to worry about breaking EASY - After a few minitues of practice almost anyone can use it. LIGHTWEIGHT - Weighting in at less than an once it's easy to carry. QUIET - More fun less noise. Sick of boring keychains with little purpose. The KeySpinner is an addicting brain soothing action for everyone. Attach it to your keys and get spinning with no moving parts. We are the original creators of the KeySpinner.