SYBL 20PCS White Powerful Concrete Hard Wall Drywall Picture Hooks Non-Trace Hanging Hook Traceless Nail Plastic Wall Hook for Picture Photo Frame Clock Hangers(4cm/1.57" Length) 4.4 out of 5 … If you are using 2 hooks for a wire hanger, measure the width of the object you are hanging and divide that number by 3. Home Depot has these: