The Gardner Bender .25-Inch Black Plastic Coaxial Masonry Staples are UV resistant, high dielectric strength single-nail coaxial staples. They are constructed of high-grade injection molded polyethylene cradles and zinc-plated nails. The smooth saddles hold the coaxial cable securely while preventing damage. The .25-inch size is designed to fit your coaxial cable attachments. Gardner Bender has 50 years of experience making professional electrical tools and supplies of consistently superior quality, so you can count on high-performance products at a fair price.