"The Roughneck Digital Grease Control Valve is a pistol-grip dispenser valve that provides positive control of high-pressure lubricants. When supplied with air, the valve will start the pump with the pull of a trigger, then stop pumping when the valve trigger is released. Accessory Type Grease control valve, Includes Flexible spout, rigid tube, Fitting Size in. 1/4, Length in. 10.23, Material Type Aluminum, Handle Type Pistol grip, Storage Case Included No, Dimensions L x W x H in. 10 1/4 x 9 1/16 x 2, Pieces qty. 1, Max. PSI 8,700. Easy-to-read digital LCD display Precision accuracy to 2 Dispenses in oz., lbs. or g., kg. 8,700 PSI pressure range 1/4 in. NPT inlet connection Auto start with the pull of a trigger Powered by 2 AA batteries included Equipped with low battery indicator"