Mechanism with outstanding locking force for precise closing every time, tested and guaranteed for 10,000 times perfect alignment of prongs, even when mechanism is completely filled with paper perfect stability on the shelf fsc certified 100% recycled board, covered with polypropylene with cover lock, thumbhole and metal shoes for protection 3 year guarantee on the mechanism capacity: 500 a4 sheets to print your own label, go to www.esselte.com/easyprint colour: red packed 10