The OOK adhesive picture hanging kit is ideal for drywall, plaster, and wood materials. These picture hanging hooks feature both adhesive and nail-in mounting types. The picture hanging kit is capable of holding weights between .5 - 75 pounds. The OOK picture hangers are reusable which allow for repeated use. Includes (28) 10lb picture hangers, (20) 30lb picture hanger, (8) 50lb picture hangers, (12) small poster strips, (8) medium hook & loop sets, (8) large hook & loop sets.