DescriptionMade of high-quality plastic material, this item of 5 binding spines are durable and practical for long lasting use. These binding spines allow you to easily open and add or remove pages without a machine. for use in busy corporate offices, school offices, classroom, home, etc.Features- Color: Random Color. - Material: Plastic. - Size: Approx. 28.00X1.00X1.00cm/11.00X0.39X0.39in.- Range of Use: only suitable for book binding with a center distance of 9.5mm/0.37in and a hole margin of 3.6mm/0.14in.- Made of high-quality plastic material, durable and practical for long lasting use. - These binding spines allow you to easily open and add or remove pages without a machine. - Also allow 360 degree page-turning capability for easy reading of bound documents. - for use in busy corporate offices, school offices, classroom, home, etc. - You shall find it really helpful if you are a great lover for loose-leaf books.