Give your wrists a break while working on your warm glass projects! These Tarheel Tools Lightweight Plastic Running Pliers are comfortable and made with tough, heavy duty plastic for durability. Use these running pliers to easily break glass along a score line. These Slumpy's Tarheel Tools Running Pliers work the same as metal pliers, but they are lightweight and slightly smaller. To use, apply gentle pressure to the glass right on the score line. Don't let these pliers fool you, they are made with tough, durable plastic and can easily break almost any score.