HIGH QUALITY MATERIALS]: These hook and loop coins are made of high quality polyester and nylon material, which is very strong and durable. The material on the back is plastic film which makes it easy to peel off and most importantly, they are environmentally friendly [Highly Adhesive and Waterproof]: These self-adhesive hook and loop nylon coins are highly adhesive and sticky, making them ideal for smooth surfaces such as paper, plastic, glass, leather, hardware and more. The strong, long-lasting, anti-adhesive properties make them well suited to wet environments. [Wide range of applications]: This sticky point can be used to get items fixed. Ideal for school projects, organisations around the home, offices etc. While the hook and loop technique may not be helpful in managing students, items such as calendars and classroom boards using hook and loop can make organising lessons, projects and the classroom itself much easier and more effective. Reusable and does not damage surfaces: This sticky back coin pack is highly adhesive and easily removable without damaging surfaces. Its removable fastening action ensures a long-lasting stickiness and can be used in place of buttons, zips, pins, glue or tape to attach your pictures, postcards or small drawings anywhere that's slick. [Size and Packaging]: These hook and loop dots are 10mm in diameter. Each pack includes 500 hooks and 500 ring dots (500 sets in total).