Greg Smith Equipment Sales carries several different models of service jacks. They are sometimes referred to as floor jacks because they are normally found in a service department and are rolled from bay to bay for vehicle lifting purposes. Other models include the center rolling jacks that are found between the runways of a four post lift and are used to raise a vehicle off of the runways to perform wheel service. Please visit our web page for floor jacks or our web page for 4-post lift jacks to learn more about these products. If you have more questions, please call the professionals at Greg Smith Equipment Sales.