Fit for Flatback Eye Cabochon: these safety eye bezel trays are perfect for matching with flatback eye cabochons in 18mm diameter, a convenient way to turn your glue eyes into safety eyes. Size and Quantity: package includes 40pcs safety eyes settings and 40pcs washers, can make 20 pairs craft eyes. 20mm/0.79inch in diameter. (Please note: cabochons not included.) Fun of DIY: Safety eye cabochon settings are great tools for DIY hand-made puppet and crafts.You can use them to DIY different kinds of stuffed crochet animals or fingers, accompany your daughter, son, students or others. Easy to Use: Just stick the plastic safety eye on the base, then pass through where you want the eye to be placed and secure it with the plastic pad. The plastic pad prevents the eye from easily falling off during use. Wide Application: Craft eyes bezel trays are suitable for animal and amigurumi project and craft making, perfect for plush puppets, teddy bears, dog, stuffed animals, crochet and sewing projects, creatures, monsters and plush crafts.