When only the strongest hold will do, reach for our strongest fastener, Scotch extremely strong fasteners. designed with reclosable, dual-lock technology, these heavy-duty permanent fasteners are ideal for holding down tarps, hanging metal signs and even mounting tools or solar lights. They're great for indoors too-think a chalkboard and even framed art. So give your power tools a break and get the job done in a snap with the gravity-defying power of Scotch extremely strong fasteners.