9.8-inch Bird Proof Nail Bird Proof Metal Stainless Steel Bird Proof Nail 15X Spike+1X Base Features: The kit works for multiple types of birds such as pigeons, species pigeons,, swallows, sparrows, starlings, seagulls, bats, and even climbing animals Bird thorn the spikes can be installed along any elevated areas as roofs, chimneys, gazebos, even near disk TV antenna (no RF interference), towers, valves, landings,, posts, gangways, curved surfaces or any area being with bird droppings The covered area of each bird thorn is 1.1 foot long and a width of 5 inches, total coverage per pack is 11ftThe spike's flexible base can bend a full 360 degrees, The spike kit comes with pre-drilled holes and glue troughs to make installation fast and easy, Stainless Steel Construction with No Plastic Parts, so that the long Can be used with maintenance Bird control spikes Effective, safe, permanent solution Product Description: The product includes 15X thorns+1X base