Package Includes:You will receive a box of 40 sets of brooch bases, along with 40 matching size resin blank buttons. We offer five different sizes enough to meet your various requirements for your crafting needs. Five sizes:Size 1 measures approximately 35.5 mm (1.4 in);Size 2 measures approximately 28.5 mm (1.12 in);Size 3 measures approximately 23.5 mm (0.93 in);Size 4 measures approximately 19 mm (0.75 in);Size 5 measures approximately 13 mm (0.51 in). Material:Our brooch clasp pin tray is made of metal materials, and complimentary with matching resin buttons for use. The base is sturdy and durable, the surface is smooth, strong and lightweight, not easy to fade or rust. It is comfortable to wear. The resin button is not easy to deform, which is very suitable for customizing its own badge. How to Use: First step, you just need to cut your own embroidery work according to our resin buckle size, remember don't cut the end.Second step, put the resin buckle tightly against the back of the work, fix the end of the embroidery work with thread or glue. Finally, glue the base of the brooch to the resin clasp, and your one-of-a-kind brooch is ready. Usage:Used to make your personalized safety pins, brooches, badge pins, lapel pins, hair clips or other crafts that require pins. Decorative brooches allow you to create personalized accessories to wear on jackets, sweaters, or hats to add extra sparkle to your jewelry making projects.