The Creative Hobbies 29 Piece Strong 1.25 Inch Round Ceramic Ferrite Ring Magnets pack offers the perfect solution for various applications. With 2800 Gauss, Grade 5 strength, these magnets are powerful and can hold up to 1 pound. They measure 1.25" in diameter with a 3/8" inside hole diameter and a 3/16" thickness, making them versatile for a wide range of uses. These magnets are DIY-friendly and receptive to most adhesives, including hot glue, E6000, Goop, 2 part epoxies and more, which makes them ideal for crafts and projects. Whether you need them for your refrigerator, whiteboard, arts and crafts, science projects, or classroom use, these magnets are a practical choice. They also serve as an excellent educational tool for the classroom, helping students understand magnetic properties. Experience the strength and versatility of Creative Hobbies Round Ceramic Ferrite Ring Magnets.