-Capacity Ton: 4 -Stroke: 5/8" -Collapsed Height: 1 5/8" -Extended Height: 2 1/4" -Spring Return: NO -Plunger Diameter: 1" -Effective Ram Area Sq. In.: 0.994 -Operating Pressure PSI: 8050 -Oil Capacity Cu. in.: 0.6 -Shipping Weight: 2.3