Easily hang posters mounted on foam core board. Create hanging points on your foam board signs & Merchandise without drilling or having to use grommets. This " dog tooth " style hanger can be affixed to foam board by hand. The hinged hanging point folds down for shipping and easily flips up when you are ready to suspend your material. Use only with 3/16" or thicker foam board. (Do not use on 1/8" thick foam board)