These easy-to-use Sign Popper Fixings provide a fast and secure way to attach signs to barriers—simply line up the sign, insert the popper through the hole, and push to lock it in place, with removal just as quick by lifting the head with a screwdriver. Featuring a 9mm diameter and 18mm flat head, they offer durable, reliable performance for temporary or semi-permanent signage and come supplied in a bag of 100.