Flexible bird spikes are bendable base mounts flat or on concave or convex curves. Install right side up upside down or on any angle. Heavy duty stainless steel bird roost inhibitors prongs plus long-life polycarbonate base combine affordability and effectiveness. Two-foot strips of bird spikes come pre-assembled (no extra labor). Each strip “locks” with the next for a seamless fit. Strips snap to the inch for precise measurement and no wasted material. Attach with bird spike adhesive nails screws wire or more.