Contractor quality mechanical jack for all-purpose lifts and supports. Holds heavy loads indefinitely - will not creep. Heavy-duty bell shaped cast base. Less effort required to lift capacity load with new design. Corrugated steel swivel head turns easily under load. Easy to carry and position with built-in handle. Complies with OSHA, ANSI/AMSE B30.1 standards. Turning bar not included (Jet 440303 SJTB-3/4). Specs: 16.5" Height, 8" Width, 7.8" Length, 2" x 12" Screw Size, 1" Bar Hole Size, 6-7/8" Base Dimensions, 4" Head Diameter, 15-3/4" Height Closed, 24-7/8" Height Extended.