The OIC Heavy-Duty Adjustable Three-Hole Punch OIC90078 is designed for efficient and easy punching of 9/32" holes in up to 32 sheets of 20 lb. paper. It features an ergonomic lever handle and three adjustable punch heads for 2-hole or 3-hole punching. This model includes an adjustable paper guide and an easy-to-empty chip tray, ensuring a clean workspace. Built with all-metal construction, this jam-free hole punch offers durability for long-term use.