With this precision tool you can accurately score glass for hours without fatigue, even sitting down! Just hold the comfortable weighted handle and follow around your pattern lines. The carbide head rotates 360°, is self-oiling, and maintains an exact 90° angle to the glass surface. The result is a perfect, effortless score every time! The unit is just 24" long, yet can make a single score as long as 42". It may be used directly on your tabletop, or plugged into a WAFFLE grid surface (sold separately). Precision made in USA with a one year warranty.