Create mini bullseyes to terminate the end of a long cracks in automotive windshields Doubles as a probe and mini bulls-eye maker Clean debris out of the impact point of a rock chip in a windshield break Removes foreign matter and loose glass from that damaged area with replaceable hardened steel point The red aluminum tip is fitted with a special magnet that holds the point in place but allows for easy removal and replacement The Slide Hammer is a versatile tool that is primarily used to create mini bulls-eyes at the end of long cracks, but also makes an excellent probe for cleaning the impact point of a break. Although long cracks can be filled without first creating a termination point, resin injected into the crack under pressure can often cause the crack to grow. Mini bulls-eyes are used as an effective termination point to help stop long cracks from spreading during the resin injection process, and also provide a pool of resin at the end of the crack to assure the crack is filled to the very end.