Product specifications: Size: 20mm/0.75inColor: whitePackage: 150pcs Hook and 150pcs Loop Coins?Total 150 sets?Application/usage: Multipurpose Both hook and loop coins are made with SUPER tack adhesive glue. The adhesive on the back is best used at moderate temperature. The removable adhesive glue is safe for hanging and mounting, and leave no residue left behind. The long-lasting glue is thin and transparent, suitable for all surfaces including glasses. Work more effectively, because they are so easy to peel off from the roll. Water resistant adhesive glue is good for outdoor mounting, and no worries moisture breaking in. The product can be widely used in many occasions. Ver suitable for home, school, office, and perfect for sewing and crafts. Also ideal for hanging educational tools, posters, charts, and signage etc.TIPs to UseStep 1: Clean the wall and make it dry without dust.Step 2: Stick the hook coin on the wall. (Wait 5 mins)Step 3: Stick the loop coin on the paper. (Wait 5 mins)Step 4: Align the hook and loop coins together and press. Instructions:Clean and dry surface before application.Peel tape from fastener and press firmly into place.Keep it clean and dry. Adhesive reaches maximum strength after 24 hours.Hook & Loop pre-attached for easy & precise placement.Will not stick to furry or fuzzy fabric and surfaces. Continued exposure to full sunlight can damage fastener strength.NOTICE: WARNING: CHOKING HAZARD. Small part avoids children to swallow. Keep away from Fire! May your wisdom find out every usage of these hooks and loops in your life.