1、[Convenient and Professional] These binding wires ensure quick and efficient document binding with 12.7mm diameter and 34 loops. 2、[Versatile Compatibility] With a binding capacity of up to 100 sheets of A4 paper, these wire binding rings are ideal for presentations, reports, and projects. 3、[Metal Wire] Made of nylon coated iron wire, these double loop binding wires offer reliable strength and long lasting performance. 4、[Easy to Use] The 3:1 pitch of these binding spines makes them easy to insert into punched holes, providing a sturdy and professional finish to your bound documents. 5、[Professional Appearance] The stylish polished design of these wire bindings adds a professional touch to your documents, making them perfect for business, school, or individual use.