50 Packs Double Wire Binding Spines Paper Size 180 Sheets Capacity 3Celsius4in Diameter Wire Binding Rings for

180 Sheets Capacity: These wire binding rings are suitable for paper size, with 19mm(3Celsius4in) binding diameter, and it can hold up to 180 sheets of paper. Metal Inner Wire: The interior of these double binding wires are made of sturdy and metal wire, which is strong and , allowing you to easily organize papers and store for a time. Nylon Coating: These paper wire binding spines adopt external nylon coating, with glossy surfaces, resistant to wear and scratch, service life. Item Type: Double Wire Binding Spines Material: Iron, Nylon Binding Diameter: 19mm Celsius 0.75in (3Celsius4 Inch) Binding Capacity: 180 Sheets ( , 70g) Number of Teeth: 34 Teeth Ratio: 3:1