Nizi Jewelry Crystal Clear Color Hotfix Rhinestones ss3 ss4 ss5 ss6 ss8 ss10 ss12 ss16 ss20 ss30 ss34 ss40 (ss40 8mm 144pcs) About 1440pcs for ss3-ss20 288pcs for ss30-ss34 144pcs for ss40 flat back rhinestones round brilliant cut Glass material and light grey back glue with high shine Perfect for jewelry making design and nail art decorations,clothes ss3 ss4 ss6 ss8 ss10 ss12 ss16 ss20 ss30 ss34 ss40 packaged separately These are hotifx to apply, you could glue them too.