Feature: 1. UNIQUE OVAL SHAPE: Made from natural magnet material, with beautiful rainbow colors, our heavy duty industrial grade magnets allow you to easily grip and adhere to whiteboards. 2. PERMANENT MAGNET: We use permanent and strong magnets for enhanced magnetic force. Even when applying force or constructing a model, the magnets won't detach, allowing you to easily build 3D objects. 3. EASY TO USE: Designed with a unique stone shape, these magnets have strong magnetic force and high strength adhesive. You don't have to worry about magnets falling off. They leave no residue or dirt on your surfaces, such as refrigerators, blackboards, bulletin boards, or maps, making them easy to install or remove. 4. COOL TOOL: Magnetic balls are fascinating and cool tools for technology and office use. They can be used as innovative, fashionable, and unique office decorations, as well as refrigerator magnets. 5. WIDE APPLICATIONS: Perfect for school educators, researchers, professionals, or commercial or industrial users, specifically for educational, research, professional, commercial, or industrial purposes. 6. FUN EXPERIENCE: Place one in each hand and flip them upward, throwing them towards each other. If they are close enough, they will attract each other, producing a loud clacking sound and rotating in the air. The ideal way to create sounds is to use a high arcing trajectory, causing them to brush against each other. If they collide too strongly, they will bouncing off each other. Specification: Item Type: Oval Magnets Mode: D60 x 18mm Material: Magnet Magnet Size: Approx. 60 x 18mm / 2.36 x 0.71in. Package List: 6 x Magnet Note: 1. There may be slight error in size.2. If you accidentally swallow or inhale magnets, seek medical attention immediately.