Simple and easy to handle. Oil-hydraulic system is designed so that the oil cannot escape from the chamber. Bottom-plate recovery springs enable the unit to always be in a working position. Bridge and base are made entirely of cast, heat-treated aluminum. Oversized spindle. Press flange enables flasks to be removed without having to raise or lower the spindle. Apply up to 3500 psi of controlled pressure to 2 flasks for trial pack and final closure. 2-year warranty.21"H x 9"W x 9"D