Versatility: it's the standard to which Rotary Lift's four-post lifts are built. These lifts handle cars, vans, trucks - even light and medium duty commercial vehicles with ease. If you service a wide variety of vehicles, Rotary four-post auto lifts are the right choice for maximum productivity. The SM18 Offers The Versatility You Need To Service Light and Medium Duty Commercial Vehicles With Ease! - Cylinder located under the runway - Dual function Sentinel Lock System - Air Filter/Regulator/Lubricator - Adjustable latch bars - Single piece non-welded runway with tracks for rolling jacks - ALI Gold Certified (SM18LO-X)