Three-hole punch features a compact construction to store easily in three-ring binders and deliver an immediate way to organize your unpunched sheets. Plastic parts are infused with antimicrobial protection to inhibit the growth of bacterial odors. Multipurpose design also includes a 10" ruler for quick measurements without requiring you to keep additional tools. Eco-friendly, plastic and metal hole punch is made with post-consumer materials to reduce the overall impact on the environment.