Hillman ReadyNail Sawtooth Picture Hangers have pre-inserted nails. To install, place sawtooth hanger in desired location and gently tap nails with hammer. This hanger is great for wooden frames. Available in large and small sawtooth hangers to fit your desired frame size. Gold finish so your frames are complete with a professional look. Tip: ensure that your are using the appropriate sized wall hanger (cleat, hook, nail, etc.) to support your frame's weight when using OOK Sawtooth Picture Hanger.