Effortless to use These paper clamps differ from common binder clips or staples, offering a much more robust, durable, and anti-loose design. Simply press the built-in dispenser to release a clamp, and you can handle about 40-50 sheets of letters, files, documents, receipts, school test papers, and more. No scratches on the paper. Portable and durable Made of reusable metal, these clamps hold up to 40-50 sheets each. The clamp pusher is equipped with a flexible anti-rust spring and can hold up to 8 clamps at a time. Wide range of use Clips can be removed and reused repeatedly without damaging paper. Perfect for personalizing, coding, and indexing paperwork, among other tasks. Essential binding tool No damage binding. The clamps slide and bind smoothly, are sturdy and easy to remove. Widely used in offices, schools, and other environments. Use scenarios - Classroom: bind and distribute tests or handouts quickly; remove and reuse after grading. - Office: group receipts, invoices, and project notes; re-open and reuse without harming documents. - Home or study space: organize homework, notes, and tax documents; easily categorize and retrieve as needed.