Simplex jacks are the industry standard. With over a century of experience in designing and manufacturing mechanical jacks, Simplex is the undisputed market leader that has set the standard for high quality and reliability in the mechanical jack industry. The Widest Selection Only Simplex can offer a full range of Ratchet Jacks, Screw Jacks, Superjacks, Push/Pull Jacks and Mine Roof Supports to fit a broad range of applications and use. Simplex Jacks have proven to withstand the toughest application and use in today’s market. Each Jack component is carefully inspected and assembled by highly skilled assemblers and tested to meet or exceed ANSI B30.1 Safety Standards. Simplex stands behind every mechanical jack we sell with a limited lifetime warranty supported by our global network of Industrial Distributors and Authorized Service Centers.