MATERIAL - Plastic, metal. Clip Button Diameter: 75mm / 2.95 in (approx. 3 inch). Thin Film's Diameter: 85mm / 3.35 in (approx. 3-3/8 inch). Recommended Cutting Size: 85mm / 3.35 in (approx. 3-3/8 inch).SUFFICIENT BUTTON KIT- We offer 2 option: 100pcs / set and 200pcs / set for you. Each set including metal button shells, metal pin backs, plastic films. EASY TO USE - Just print any pictures, photos, cut them into proper pieces (the same size as the film), and make button pins with a machine and a rubber ring.QUALITY MATERIALS - The quality PVC film makes the badge more shiny and waterproof, and the metal cover ensures the durability of the badge. These features make the buttons you make more perfect and durable.