The superior holding power of these Carpet Tacks makes it easy to update your décor and carpeting. Whether you need to repair an area of carpet that is lifting from the floor or lay new carpet, these tacks are sure to meet your needs. Designed with a triangular shank and a sharp tip, they easily penetrate wood tack strips to attach them firmly to the subfloor. They secure cut carpet edges against base board moldings around the perimeter of the room. The round head is flat so they stay flush with the tack strips underneath the carpet.