Pin-Centives’ pins are generally approximately 1 inch in size with a military style butterfly clutch for secure fastening. They are made of high quality, durable metal with vibrant enamel coloring and an epoxy dome for a flawless finish.They are used worldwide for recognition, motivation and awards, as well as to indicate membership in clubs and organizations of all kinds.Schools, teachers, principals and parents love pins because they are an inexpensive way to show appreciation for achievement, effort and success.Quantity and volume discounts available on all styles. Customer designs and personalizing available for large quantities.