Engineered for increased strength and streamlined for productivity—the industry standard is even better. An updated design brings superior reliability and a contemporary touch to your desktop. All-metal construction—time-tested—for enhanced durability. Smooth new form and finish. Workhorse 747 architecture and features: constructed with top performance in mind (with an inner rail, positive locking latch and more), to minimize jamming, maximize secure staple placement and deliver reliable performance that you can count on. Easily flips open for tacking and has a reversible anvil for pinning. Staples 2-25 sheets of 20 lb. paper. 100% Performance Guarantee when used with Swingline S.F.® 4® Premium Staples.