The Westward® hydraulic service jack are used for lifting part of a total vehicle (one wheel). This jack is equipped with a built-in bypass device to prevent damage to jack from overpumping. An internal safety valve prevents damage to jack from overloading. It features a 1-pc. lift arm with dual leveling mechanism and reinforced flanged side frames. Twist gear mechanism gives metered control. Applications include automotive, truck, farm, industrial ad construction.