This Professional MARSHALLTOWN Tile Cutter has durable; high-quality bearings for smooth operation to make cutting ceramic; porcelain; and mosaic tile up to 36in (914 mm) quick and easy. This tiling tool features a solid I-beam rail system and ruler for more accurate cuts; even when scoring hard porcelain. It has an adjustable titanium-coated tungsten carbide scoring wheel to cut tile up to 13/16in (21 mm) thick.