Bird-B-Gone’s Stainless Steel Bird Spikes are packaged in 2-ft. sections, 50 ft. per box. They are made of stainless steel pins in an ultraviolet (UV)-protected polycarbonate base. The spike strips are available in four widths to match the surface being treated: 1, 3, 5 and 8 in. The base of the spike strip is 1.5 in. wide, and can be glued, screwed or tied down to most surfaces. The spikes are made by Bird-B-Gone in the USA, and carry an industry-leading 10-year guarantee.