The 1 Inch long saw-tooth hanger is perfect for plaques and signs. No nails are needed, just use a hammer to tap the hanger into the back of the wood and your job is complete. Just find a rough center and then use the teeth on the back of the hanger to adjust the level of the plaque, sign or wood picture frame. Made from yellow zinc to resist rust and corrosion in your wood project. Sold in packages of 10.