This Esselte lever arch file contains a patented No.1 filing mechanism with outstanding locking force to keep A4 documents secure. The file has a 75mm spine and can hold up to 500 sheets of 80gsm paper. The file also features durable polypropylene covers, a metal thumb hole for easy retrieval from a shelf and metal edges for long lasting use. This pack contains 10 blue A4 lever arch files.