Bottle jacks are used for a wide range of lifting applications, both in the shop and for roadside service. They provide a high level of lifting capacity in a very compact and portable unit. Stroke - 4-1/2" Retracted Height min. - 7-1/2" Length of Screw Extension - 2-9/16" Height with Screw Extension - 14-9/16" Pump Strokes to Extend Piston One Inch - 13 Saddle Dia. - 15/16" Base Size - 4-9/16" x 2-7/8" Carry Handle - No Weight - 6.2 lbs.