The Novus 031-0333 electric stapler is a heavy-duty electric stapler designed for everyday usage in the office, home, or classroom. It is capable of stapling up to 20 sheets of 20 lb. paper with a fast delivery and staple clear-out system. It is made with durable metal construction for lasting strength and performance and easy access to high-capacity staples (NV044-0063 and NV044-0084). It is powered by 4 AA batteries (not included) or an optional AC adaptor (not included). Safety features include an auto-shutoff to protect against overloading and jamming.