BIRD WIRE 2000™ is the the most discreet, low-profile anti-perching deterrent available. It is designed for ledges and areas where large birds have been temporarily "resting", and where a low visibility product is essential. BIRD WIRE 2000™ consists of a nylon coated wire tensioned by springs between stainless steel posts, which when mounted, offers an unstable landing area for large pest birds. 820' ROLL