Item Type: Binding Coils_x000D_Material: Polypropylene_x000D_Inner Diameter: Approx. 15mm / 0.59in_x000D_Application: Stationery accessories binding supplies 1Can Be Used Repeatedly: Bright colors and good gloss. Good glossy appearance, strong adhesion, resistant to wear and tear, rust and corrosion, aging, not easy to break and fade, page turning, can be used repeatedly. 2Easy to Carry: This binding coil is very easy to carry, you can carry it on your body anytime when you need it, and when you don't need it, it won't take up a lot of space when you store it. 3Binding Method: You just need to punch the right holes can be bound manually or with instruments, very friendly to novices, not too difficult. 4Polypropylene Material: This binding coils is made of polypropylene, durable and strong, allowing you to easily compile the paper, and can be used for a long time under normal operation. 5Applicable Scenarios: Any office, student, or individual can easily operate it, and it is also very friendly to novices, so if you happen to have related needs, then this is the product for you.10 x Binding Coils