Designed for cutting heavy glass from 1/4 to 1/2 inch (12 to 25.4 millimeters) in thickness. Pistol Grip Gives You More Control and Comfort. Interchangeable Cutting Heads. This Oil Feed Cutter gives you outstanding control of your cut with it's pistol grip handle while hand strain is minimized. The wide cutting head is great for use with a straight edge for those repeat cuts. An automatic oil dispensing system keeps the wheel lubricated every time you cut. This precision crafted Replacement Heavy Glass Cutting Head has a wheel honed to a 154 degree angle. Length: 6 in (152.4 mm)