This CRL TOYO Pistol-Grip Supercutter Glass Cutter Pattern Head gives you an outstanding control of your cut with its pistol grip handle while hand strain is minimized. It is designed for hours of fatigue-free cutting, and features a self-lubricating head fed by an oil reservoir in the handle. The cutting head is great for use with a straight edge for those repeat cuts. Known for its high quality, this cutter is built to last and make the cleanest of cuts. An automatic oil dispensing system keeps the wheel lubricated every time you cut. Cutting wheel hone angle is 140 degrees.