Bird-X Stainless Bird Spikes, 24 Feet, Regular Width, 5 Inches at Top Repel birds from landing strips like roof ledges, signs, sills and trusses. These Bird X bird spikes are made from surgical grade stainless steel for added durability! ST302 hard surgical grade stainless steel spikes with polycarbonate base with UV inhibitors resistant to virtually all weather and harsh environments. 2 foot sections snap together snap to the inch for precise fit without waste. Bendable base mounts flat, on concave or convex curves or upside down, right side up or on an angle. Attach with adhesive, nails, screws, wire or more. Top 5 inches. Base Width 0.8 inches. Height, Highest Point 4.3 inches. Diameter Hole in Base 0.156 inch diameter. Polycarbonate Center Spike 0.125 Inches. ... Maintenance-Free When installed properly, no ongoing maintenance is required Warranty Stainless Steel Bird Spikes are backed by a Bird-X special 20-year warranty. NOTE ALL bird control methods are more effective when used together. Combine light and sound repellers, roost inhibitors and visual scare devices. This item ships from a separate warehouse and may require extra time for delivery.