The Vevor coil spiral binding machine is designed to create neat, professional-looking documents for office, school, and business use. It punches up to 46 holes, handles up to 20 sheets at a time, and supports binding projects up to 500 sheets. With 46 detachable pins, adjustable edge guides, and support for Letter, A4, and A5 paper sizes, it offers flexible document handling. The durable construction combines an iron base, ABS plastic shell, and metal side arms for long-lasting performance. It also includes 100 pieces of 5/16" coil binding spines plus useful accessories for getting started.