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OFA specializes in the manufacture of tire traction chains. At OFA’s state-of-the-art factory in Finland, special Boron alloy steel is converted into the highest quality tire chain. Prior to painting and packing, the chains are case-hardened in a special process which makes the products extremely durable with high surface hardness and provides excellent fatigue strength and a resilient core. OFA traction chains ensure excellent grip and tire protection for forest machines, tractors, trucks and construction machines all over the world. OFA chains are known for being easy to mount and good tire fit. The long tradition, ‘Made in Finland’ quality and ISO 9001 certified quality management system make sure OFA chains have a long lifetime even in extreme conditions.