Feature:1. SPECIFICATIONS: This plastic binding spine is a 34 hole design with an inner diameter of 12mm, which can bind about 85 sheets of paper (for reference).2. PLASTIC MATERIAL: Made of excellent plastic material, reusable and lightweight, which has good toughness, wear and aging resistance, and long service life.3. GOOD DURABILITY: These binding rings have good surface gloss, strong adhesion, not easy to break or fade, easily bind paper and store for a long time.4. EASY TO INSTALL: Just punch the appropriate holes in the paper for manual binding, suitable for office, school or home use, convenient and practical.5. 10PCS IN 1 SET: Including 10pcs binding loops, sufficient quantity for easy use and replacement, detachable split design, easy to open and close at any time.Specification:Item Type: Binding SpineInner Diameter: Approx. 12mm / 0.47inNumber of Holes: 34 HolesBinding Pages: 12mm 85 sheets (for reference).Package List:10 x Binding Spines