The Leponitt Spring Loaded Metal Running Pliers are a must-have tool for anyone working with mosaic and stained glass. These metal running pliers are specifically designed to effortlessly snap glass that has been etched with a glass cutter, making them an essential tool for any glass artist. The spring-loaded design ensures a smooth and controlled break, while the lightweight construction and ergonomic grip make them comfortable to use for extended periods of time. With a length of 165mm and a jaw width of 22mm, these running pliers are the perfect size for accurately breaking glass pieces to fit your mosaic or stained glass design. Whether you are a beginner or an experienced artist, these running pliers are a valuable addition to your toolkit.