The Vevor coil spiral binding machine is designed for creating neat, professional-looking bound documents for offices, schools, and businesses. It punches up to 34 holes, handles up to 12 sheets at once, and binds documents up to 120 sheets. Adjustable edge guides, side margins, and support for 3/16" to 9/16" binding spines help accommodate different document sizes and project needs. Its iron base, ABS shell, metal side arms, and carbon steel blades provide durable, long-lasting performance. The machine is suitable for Letter, A4, and A5 document binding.