The tabletop constant heat hand operated sealer is excellent for sealing polycello films, humidity-proof cellophane films, polyethylene films, aluminum foil coated bags and gusseted bags. It comes equipped with a mesh seal 5/8 inch wide by 12 inches long. Serrated (horizontal lined) jaws available. This sealer is ideal for producing wide seals of thick bags. Portable bench tabletop unit that you can place at the level to work most efficiently.