The Bird B Gone Pneumatic Hog Ring Tool uses compressed air to quickly and efficiently install hog rings for net installations. The angled, beak like, jaws of the tool allow for accurate precision crimping in difficult to get to areas. The design of the pneumatic tool has a comfortable ergonomic grip, making this tool ideal for large projects or customers who install netting on a frequent basis. The pneumatic hog ring tool requires the use of a air compressor. Note: Only use the Bird B Gone Pneumatic Hog Rings BNHRPS-AC31CH and BNHRPG-AC31CH. Key Features and Benefits Use with air compressor Quick, accurate, and efficient hog ring tool Ergonomic grip Ideal for large and frequent net projects Choose from galvanized or stainless steel hog rings