picture frames / photo frames: OOK® is America"s most popular brand of art hanging hardware. Used by professionals OOK hangers will not damage your walls. Reusable. Used By Museums & Art Galleries Here a package of 20 brass case hardened brackets for professional style picture frame hanging. Perfect for piece weights up to 10 lbs. To shop the complete inventory of OOK styles click OOK® Hanging Hardware 049223506722 - 50672