These low profile scissor lifts have external power pack equipped with a relief valve against overloading and a compensated flow valve for controlling lowering speed. Power pack comes with 8 foot long hose. 115 volt single phase and 1hp motor. Features single acting cylinders with drainage system and check valve to stop lift table lowering in case of hose burst. For safety purposes there is a clearance between scissors to prevent rapping. Mechanical blocks provide safe maintenance. The removable lifting eye helps with handling and installing lift table.