[EASY BINDING AND PUNCHING DOCUMENTS] - Experience the convenience of easier binding and punching documents with these file clips.[HOLD 350 SHEETS OF A4 PAPER] - Suitable for 80mm/3.1in hole spacing binding, these durable metal binder clips can securely hold up to 350 sheets of A4 paper.[LIGHTWEIGHT AND DURABLE] - These binder clips are lightweight yet durable, providing a simple and convenient solution for organizing documents. They are also environmentally friendly and non-toxic.[DURABLE AND RUSTPROOF] - Made of premium metal material, these binder clips are durable, rustproof and resistant to deformation. They can be recycled for long-term use.[STABLE BINDING & EASY SUMMARIZATION] - Get stable binding and take full control of your documents with these binder clips. Summarizing and organizing your documents has never been easier.