Please note that these dots are not Needle Nannies. Needle Nannies can be purchased separately. This collection is comprised of 3 1-inch magnetic Quilt Dots. Each Dot has a secure magnetic back that fits into the interchangeable jewelry bases, including necklaces, bracelets and bag tags (sold separately). When used with these accessories, the magnet firmly holds the Dot in place, while also giving you the freedom to switch between Dots as desired. You can also show off your collection on any magnetic surface.