Every dot tape of this item is about 20mm in length and width which is a proper size for most things. This hook and loop can be attached to most of things, especially for smooth surfaces of paper, plastic, glass, leather, metal, etc. The sticky dots are really great for holding their drawings, pictures, homework projects,and even toys up. Features - Color: White. - Material: Nylon and Polyester. - Size: 2 x 0.15 - Diameter: About 20mm. - Strong adhesive, it sticks well even in wet condition. - Pure white color make it easier to see and will make you things stick to the proper place. - Easy to peel off from the backing film and stick firmly on the wall. Double sided design is more practical. - Made of quality polyester and nylon material, they are tenacious and durable. - Backing film is waterproof and can roll up without mark. And it is helpful to stop carpet sliding and keep it in place. Package list: 400 x Pairs of Sticky Tapes