Classic desk stapler is simple, accurate, reliable and strong - just what you would expect from a Swingline stapler. Durable metal construction guarantees long-lasting performance without making the stapler uncomfortable to use. Superior strength allows the stapler to staple through as many as 20 sheets when packed with the recommended Swingline S.F. 4 premium staples. You can also flip open the top of the stapler and use it to tack up papers quickly and easily. A specialized inner rail enhances the stapler's stability so that it is less prone to jamming or misfiring. Positive locking latch is also included to secure the staples in the proper position once they are loaded inside the stapler. Stapler also features open-channel loading, recessed anvil that rotates for pinning, 7-1/4" long with 4" throat, die-cast base and full rubber pad.