An all-in-one set for all of your picture hanging needs! OOK has been trusted by art galleries and museums since 1964 because only OOK hooks have a reinforced elbow for superior hanging strength. This set includes blue steel nails that leave only pin-sized holes. The pack includes a wide range of weight ratings: four 5-10 lb. hooks. Three 20 lb. hooks, three 30 lb. hooks, one 50 lb. hook and one 100 lb. hook. Bonus wall protectors also included.