With the Leitz AKTO Heavy Duty perforator it is possible to choose the number of perforations and the distance between them. The 4 hole punchers included (diameter 6mm) are movable by means of easy-to-operate clamps. The number of punches can be expanded to a maximum of 6. Punchers for making perforation holes with a diameter of 8mm are also available separately. This versatile hole punch features an integrated lock for compact storage. This heavy duty metal hole punch can punch up to 30 sheets at a time.