All the units needle felt fibers. The variations to consider are the felting area size and speed of needles and speed of rollers.
Artist Series: If you are a fiber artist, then the Artist Series will give you opportunities to meet your needs and unleash your creativity. It is a single motor unit with forward and reverse capability.
Pro line: If you run a small business and make felts often, then the Pro Line provides a fast work horse unit that allows you to individually control the speed of feed rollers and needles. It has two motors. It comes in various widths, to suit your projects.
Lab Line: Designed to have fast testing of needling and fibers blends results.
Light Industrial: Custom designed and built with specifications that enable you to specify size, feeds, and speeds, according to your requirements.