Kooima Ag® has a long history and impeccable reputation for manufacturing a quality product, serving both OEM and after-market ag customers. Our Kooima Knives™ are superior to other knives on the market. Kooima Knives™ come in standard, high-performance, or serrated styles. Standard mixer knives are made of heat treated, high carbon steel with a tungsten carbide cutting edge. High performance mixer knives feature Kooima Ag®'s exclusive patented carbide coating for unsurpassed performance. Serrated mixer knives are designed with serrations on each point to give them a more aggressive cutting edge. Our customers prefer Kooima Knives™ - sharper knives that save you fuel, time and money.