Note: The color of the product we ship is the color in the first picture, and the specification and quantity are shipped according to the quantity and specification described in the title. If you need to change the color or style, you need to contact us within 12 hours after placing the order. We use high-quality raw materials, all materials are very suitable for the product, please rest assured to buy. Binding Spiral Ring For A4 Paper With 30 Hole Loose-leaf. FeaturesThis Comb Binder Spines is Made of High Quality Plastic Material, Light and Flexible.After Opening and Closing for Many Times, No Deformation "no Cracking Color.You Can Cut and Splice DIY According to the Book. After Binding, You Can Rotation It 360 Degrees. You Can Open and Close the Inside Pages by Hand.This Comb Binder Spines Can Be Used for Earphone Cable, Charging Cable and So On.Can Draw Their Own Holes, and then Single Hole Punch, and Finally Bound into a Book. Specifications:Color:See PictureMaterial: Plastic.Size: 27.50 X 1.60 X 1.60cm or 10.81 X 0.63 X 0.63 Inch.- Package Include:10pcs X Binding Ring . Products number : SM31914