These Loose-leaf Binder Rings are made of plastic material and are for use. Binders are suitable for many purposes, such as loose-leaf, memo filing, etc. Reusable binding ring, can be replaced. They are simple in design, but very practical to use and will give you a good experience. Flexible clasp can be cut to any DIY length. Features -Color:Assorted Color -Material:Plastic -Size:28.00X3.50X1.00cm/11.00X1.38X0.39in -Binding Spirals are lightweight for easy and convenient to carry and store when not in use. -Suitable for students, teachers, and other people who need them. You can use it with confidence. -These Binder Rings are great for office, school or home use. It is very easy to operate. -Simple in design, but Binding Rings are practical to use, which will give you a good use experience. -They are made of plastic material, which can be used for a long time. You can use it easily. Package list: 30 x Binder Rings