2 and 3 Piece Handles. Heat Treated Extension screws on all models through 20 ton. Meets ASME/ANSI-PALD Safety Standards. Equipped with Patented Built-In By-Pass device mechanism. Full power in vertical or horizontal position. Weight Capacity: 20-Ton Short. Minimum Height: 6-1/2". Maximum Height: 11-1/4". Screw Extension: 1-5/8". Operating Force: 101 pounds. Saddle Dimension: 2".