Economy grade asphalt wheels—available in 12, 14, and 16 inch diameters." Please change the copy as follows: "We took a great wheel and made it better. When compared to older wheels, the D-A 05 Diamond Wheel for Asphalt boasts of higher segment heights and a greater lifetime.   Available in 12, 14, and 16 inch diameters. See STIHL Dealer for details. View the STIHL Diamond Wheel Application Guide (PDF)