Bullet Points:1, Durable, Long-Lasting Material: Heavy-duty stainless steel teeth with a heavy-duty, UV-protected polycarbonate base provide the perfect combination of flexibility and effectiveness of the spike kit for years to come without the need for maintenance.2, Easy to install: The spike set comes with pre-drilled holes and glue troughs to make installation quick and easy, the package also comes with a user-friendly user manual.3, perfect for balconies, roofs, barn rafters, trademarks, patios, parking lots, and more.4, HUMANE BIRD repellent SOLUTION: the kit works on many types of pests such as pigeons, sparrows, starlings, crows, blackbirds, grackles, seagulls, swallows, bats, and even climbing animals.5, versatile use: the spikes can be installed along any elevated areas such as roofs, chimneys, gazebos, even near a disk TV antenna (no RF interference), towers, valves, landings, supporting structures, posts, passageways, curved surfaces, or any area contaminated with bird droppings. Features: Durable, Long-Lasting Material: Heavy-duty stainless steel teeth with a heavy-duty, UV-protected polycarbonate base provide the perfect combination of flexibility and effectiveness of the spike kit for years to come without the need for maintenance. Easy to Install: The spike set comes with pre-drilled holes and glue gutters, making installation quick and easy, Ideal for balconies, roofs, barn rafters, trademarks, patios, parking lots and more. HUMANE BIRD repellent SOLUTION: the kit works on many types of pests such as pigeons, sparrows, starlings, crows, blackbirds, grackles, seagulls, swallows, bats and even climbing animals. Parameter:Product Name: 3m Bird SpikesColor: As Shown In The Picture Material: High Quality Plastic Base + 304 Stainless Steel Wire Size: Approx. 25CM, needle is 1.3mm diameter, length: 11cm, lid: 8cm, 30 spikesPacking: color box packingPacking List:A: 1x25cm bird spikesB: 1x12 pcs. 25cm bird spikes