These flatback crystals rhinestones are not hot fix rhinestone, you need to use glue to fix them, and no glue included. It's good rhinestones for nail art,face art,eye makeup,body art,clothes,wedding dress,bags,shoes,phone case,car plates,and other craft decoration, DIY your own design DIY your life. Those nail crystal rhinestones are made of high quality glass,prefect cuting,shining and beautiful. Upgrade package: High quality package with 12 grids, different sizes of rhinestones are placed in separate grids, not easy to escape. This 2800pcs flatback rhinestones kit with tools including 1440pcs crystal rhinestones and 1440pcs crystal ab rhinestones in 6 sizes, 1 pcs tweezer and 1 pcs pick pen.