Silberschnitt 6 Wheel Wood Handle Glass Cutter. Six cutting wheels made of alloyed steel and tempered by a patented method guarantee high cutting quality and long service life. Turrets and cutting heads are nickel plated. An oil-soaked felt ring supplies lubrication for wheels and axles. This cutter is suitable for general cutting requirements of glass with a thickness of 1/8" to 3/8" (3 to 10 mm). Cutting angle 135 Degrees.