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 - 4-5/8" Retracted Height min. - 7" Length of Screw Extension - 2-3/8" Height with Screw Extension - 14" Pump Strokes to Extend Piston One Inch - 8 Saddle Dia. - 13/16" Base Size - 4-5/16" x 2-9/16" Carry Handle - No Weight - 5 lbs.