Rugged windshield removal tool is operated with any 1/4 inch ratchet or drill. Even if you loose the wheel locking pin, this tool is so well designed you can hold the opposite wheel to lock it meaning no down time due to missing parts. Patent pending design. This is the only windshield removal tool that can be used as a saw, by spinning the wheels and applying slight pressure to the free wheel. This will start sawing through the thickest urethane. When you run out of line you start again with the opposite full wheel. Why do I need a windshield removal tool to work like a saw? Because the line is going to break as soon as maximum tension is reached. With this tool you will be able to work with minimal tension on the line by spinning the wheels and using a little bit of brake pressure here and there. This tool requires no maintenance because all parts are pressed together (except 8inch suction cup which is bolted on). Built in 1/4 inch steel socket in each aluminum wheel. Light weight 6061 aluminum frame and wheels