Measures apx .5 inches tall and .5 inches wide. Simply place your Needle Minder on the front of your needlework canvas or fabric, in a convenient location, and align the other magnet directly behind your Minder. Made with 2 super strong high quality rare earth magnets, our Needle Keepers are strong enough to hold your scissors as well. Our Needle Nannies are the perfect Needlecraft Tool for your project basket.