Aspectek Polycarbonate Bird Spikes Kit, 10 Feet with Transparent Silicone Glue Tube DURABLE, LONG LASTING MATERIAL: Heavy duty polycarbonate prongs with sturdy, UV-protected polycarbonate base offer a great combination of flexibility and effectiveness for the spike kit to last many years without maintenance required EASY TO INSTALL: The spike kit comes with pre-drilled holes and glue troughs to make installation fast and easy, the package also comes with an user-friendly instruction manual GREAT COVERAGE FOR VARIOUS SURFACE TYPES: Each unit of spikes covers 1ft length and a width of 5 inches, total coverage per pack is 10ft. The spike's flexible base can bend a full 360 degrees, allow more available options of surfaces to be used HUMANE BIRD REPELLENT SOLUTION: The kit works for multiple types of pest birds such as pigeons, sparrows, starlings, crows, blackbirds, grackles, seagulls, swallows, bats and even climbing animals VERSATILE USAGE: The spikes can be installed along any elevated areas such as roofs, chimneys, gazebos, even near disk TV antenna (no RF interference), towers, valves, landings, support structures, posts, gangways, curved surfaces or any area being contaminated with bird droppings