Description : "Vellum Adhesive Runner -5/16""X540"". THERM O WEB-Vellum Adhesive Runner. This is a virtually invisible; photo safe; acid free; instant bond adhesive for most vellum and transparency projects; featuring a no waste and patented pivoting head. This package contains 45 feet of 5/16in adhesive. Imported. Meets CPSIA (Consumer Product Safety Improvement Act) Standards."