OOK 59242 32 Piece Assorted Frame Back Kit
Use  Zinc Plated Ring Hangers for smaller frames and projects weighing less than 20 Lbs. Similar to the saw tooth ring hangers, these hangers attach to frames that do not already have hardware.  The hangers are also self-leveling, ensuring that artwork is put up straight. Recommended for lightweight, easy jobs under 20 lbs.  Zink Plated Ring Hangers come in large and small sizes.