The Arcana ALJS3 3 Ton Steel Jack Stands has an overall 3 ton lifting capacity and a working range of 11-5/8" to 17. 5". A counterweighted pawl locks in place securely to prevent slipping, while allowing easy adjustments. A large contoured saddle with locating lugs helps support and position vehicle frame. The wide stance base delivers superior stability and includes base pads that prevents the jack from sinking into asphalt and provide stable footing for the jack stands. The welded construction and alloyed steel offer years of support. We put all of our lifting equipment through voluntary and rigorous third party safety testing, as outlined by the ASME PASE-2014 Safety Standard for Portable Automotive Service Equipment, to ensure that our products are among the safest on the market.