About this item DURABLE MATERIAL Picture frame hangers made of good quality iron, the smooth surface of black paint treatment. Picture hanging clips is an important fastener to hang up wooden frames or canvases. SIZE OF HOOKS Approx 18mm/0.7inch x 15mm/0.59inch, fits a picture frame with the back board thickness of 2-3 mm . EASY TO USE No need to use screws. Just snap the hanger to the back panel of the frames and hang to the wall hooks. WIDELY USE Sawtooth holders are great for small frames or lightweight hanging needs. Such as hanging picture frame, album, scrapbook, wall clocks, oil paintings, decorative paintings, cross stitch, weddings or exhibition paintings on the wall. GOOD PACKAGING 20 pcs photo frames hanger hooks come with a practical and reusable plastic organizer case. Small kit is easy storage and fits neatly in your closet drawer.