The patented design of these running pliers helps you cleanly break even the most dramatic scores. The upper jaw of the plier can be adjusted to match the score, so you can break out inner curves and even the smallest glass strips precisely and without splintering. Durable and strong, these aluminum pliers will safely break glass up to 5mm. Take the stress out of your glass cutting with these amazing running pliers! Bohle has made quality art glass tools since 1923; crafted in Germany. Due to importation costs, price and availability subject to change.