The OTC S06 6-Ton Jack Stands are constructed of a formed and welded steel base for strength, and are ideal for holding step vans, vocational trucks, and smaller heavy duty vehicles even when loaded. The self-locking ratchet handle can't be released under load and features a wide range of locking heights and adjusting positions to provide a universal stand for most vehicles. Additionally, the durable baked enamel finish resists corrosion and the welded foot pads resist sinking into soft ground or asphalt. The jack stands reach a maximum height of 23-11/16" and a minimum height of 15-5/8". Meets both ASME PASE-2019 safety standards for jack stands.