A workhorse stapler with the solid and consistent performance that makes it an industry standard. Durable all-metal die-cast base. A performance driven mechanism with an inner rail for long term stapling integrity. Ease of use, refined design, time-tested features; exactly what you’d expect from America’s #1 stapler. Staples 2-20 sheets of 20 lb. paper with S.F.® 4® Premium Staples.