Polycarbonate base with stainless steel spikes. Can be attached to wooden or concrete surfaces using pre-drilled holes or to plastic surfaces with double-sided adhesive or suitable glue (not included). Prevents birds from landing on buildings and fences. Width 50mm. Spike length 105mm. Polycarbonate base with stainless steel spikes. Can be attached to wooden or concrete surfaces using pre-drilled holes or to plastic surfaces with double-sided adhesive or suitable glue (not included). Prevents birds from landing on buildings and fences. Width 50mm. Spike length 105mm.