Much more than a basic stapler, this stapler features SuperFlatClinch, a patented technology that makes paper stacks 40 percent flatter. The compact ergonomic design delivers superior in-hand & desktop use. Stapler fastens up to 50 sheets with 5/16" staples. It also has a rubber base & opens for tacking. Durable desktop stapler is also made with sturdy ABS plastic & metal.