Feature:1. Durable Material: These pin back button parts adopt tinplate and plastic material, which is rustproof and highly durable.2. 100 Set: You will receive 100 sets of button making supplies, including metal covers, plastic bottoms, and transparent protective films.3. Wide Application: These round badge button parts are suitable for button maker machine, and you can DIY with your creativity and imagination.4. Sturdy Back Pin: The metal shell and back pin are durable and sturdy in your daily use, which can be tightly attached to your clothes and bags.5. Perfect Gift: These button maker supplies can help you make unique gift and memento for your family, friends, classmates, and colleagues, etc.Specification:Item Type: Pin Back Button Parts Material: Tinplate, PlasticSpecification: 100 Sets (One Upper Badge Cover + One Lower Badge Cover + One Film Compose A Set)Product Features: Badge DIY.Package List:100 x Upper Cover100 x Lower Cover100 x Sheet of Film