Flat back rhinestones for gluing. Foiled back. The occasional surface imperfection. Excellent for costumes, clothing, decor and anything you want to bling up. Combo pack of sizes - approximately 80pcs ss16, 35pcs ss20, 20pcs ss30. That's 4, 4.6 and 6.3mm. Made in China. (Combo Pack 135pcs)