With our huge selection of disc blades, Quality Farm Supply is able to offer a wide selection of smooth edge, standard concavity disc blades. These disc blades come in a wide range of sizes from 16-inch, 18-inch, 20-inch, 22-inch, 24-inch, 26-inch, 28-inch, 30- inch and 32-inch. Quality Farm Supply has smooth edge standard concavity disc blades to meet any need from the leading brands, such as Osmundson and Ingersoll. If you need a replacement standard concavity, smooth edge disc harrow blade, Quality Farm Supply is your “Go-To Source”.