The Leponitt Wheeled Glass cutter is the workhorse tool for many mosaic artists. Not only is it easy to use but it cuts all kinds of glass effortlessly. It is especially good at cutting and shaping small pieces of glass. Featuring replaceable long lasting carbide wheels. Please note; Removal of the small metal pin (with a needle nose pliers) just below the right cutting wheel will allow the jaws to fully open to accommodate thicker glass material such as Italian smalti and glass nuggets.