Designed specifically for the small production commerical winery, including all wine - on - premises. Strudy, strong and easy to use. Fully adjustable to fit a variety of bottle sizes. Works properly with natural, twin disc, agglommerate and synthetic corks. Does not operate unless safety door is closed. Equipped with air pressure regulator and gauge to adjust PSI for a variety of corks. Compact size and small footprint makes this unit ideal for a countertop or worktable. Opitional adapter kit for champange stoppers. Compressor required.