Nakpunar 200 pcs Mix Sew On Rhinestones Sew-on rhinestones have small holes, either in the middle or along the outside edge, which make it possible to attach them by sewing. You'll get randomly choose rhinestones. Appr. 8-15 mm The rhinestones maybe different than the picture. Flatback rhinestones can be adhered to surfaces by glue if you'd like to. The color may be slightly different due to screen settings.