High Quality: The magnet's surface has been treated with a triple-layer coating (nickel + copper + nickel), which protects the magnet from corrosion and prevents chipping. Smooth, robust, and durable surface with a long lifespan. Perfect Size: 20 flat magnets, measuring 30x10x2 mm, self-adhesive; powerful neodymium magnets with a single-sided branding film. Suitable for magnetic and non-magnetic surfaces such as metal, plastic, tile, glass, wood, etc. Paired Magnets: Simply stick two different objects together using a pair of magnets. They are incredibly strong for their size and have countless uses. Multifunctional: Magnets can be used in the kitchen, office, on magnetic boards, and many other applications. Such as fridge door magnets, decorations, magnetic boards, crafts and DIY projects, etc. Easy to Use: Simply peel off the protective backing and stick the adhesive-backed magnet onto the object. Strong magnetism and strong adhesion, not easy to fall off. Fast and firm adhesion, suitable for smooth, clean, and even surfaces. For maximum adhesive strength, we recommend the following: Prepare the surface: Smooth, dry, and clean. Prepare the magnet: Remove the film just before use. Do not touch the adhesive surface. Stick the magnet: Apply firm pressure for at least 1 minute. Wait 12 hours before applying a load.