Picture Hooks Picture Hanger is a useful tool for hanging pictures on solid walls. The Non-Trace Hooks differ from traditional nails. This hanger hook features multiple fine steel nails designed to leave no visible trace on the wall. It offers strong load-bearing capacity and a clean, attractive surface. Material and Size: The picture hanging hooks are made from durable, high-quality ABS plastic. They are white in color, weigh 118g, and come packaged in a bag. Easy to Use: The Picture Hanging Set is simple to install. Just tap the nails in with a small hammer. The pins go in straight and do not leave obvious marks. Wide Range of Applications: This picture hanging kit is ideal for various home decoration needs. Suitable for hanging framed portraits, wall art, wedding photos, keys, decorative plates, and more. Can be used on wood and solid walls. Not suitable for stud walls. Package Includes: 80 pieces in total (10 extra large, 20 large, 20 medium, 30 small). Available in four sizes: 5cm, 4cm, 3cm, and 2.5cm.