The Hard Paper Upholstery Tack Strip 1/2" is used in upholstery projects to attach fabric in a straight line. This tack strip is thicker and stronger than standard tack strips of the same material. It's constructed of multiple layers of craft paper compressed together. It gives a finished, professional look to your upholstery pieces and can be used on front boxing, outside arms and outside backs of sofas and armchairs.