30246 -Free-Style Magnetic Rings - A small gadget that can help you relieve stress, quit bad habits, and make you focus in the moment. With endless playing possibilities rather than spinning only, it can enhance your imagination, dexterity, focus and wash away stress. Upgrade Magnet Assembly - Super strong magnetic adsorption among the magnetic rings, gives you a smooth spinning experience and less falling off cases while playing the magnetic rings over fingers. Safety - The magnetic rings are ASTM F963-17& CPSIA certified. Smooth and round edge will not hurt fingers, kids & adults friendly. Durable - The magnetic rings are constructed with sturdy material and won?t fall apart even if dropped from a high place. Completely silent design, no noise or rattling at all. One Size Fits Most - Designed to fit most people's fingers. With a 0.7 inches inner diameter, it?s easier to play the magnetic rings over fingers. Portable size allows you to take them everywhere, makes you stand out immediately when doing the magic trick with these magnetic rings!