Osmundson Mfg. Co. opener blades on a planter, grain drill or air seeders must be manufactured at very high standards for wear, shape, appearance and consistency. Like our disc and coulter blades, we use a boron steel grade specifically engineered for quality and durability. Because of tight specifications we are one of the few manufactures in the world that is approved to produce opener blades for the OEM market. Our blades come in a variety of sizes and shapes and can either be purchased plain or fully assembled.