Single Stage Air Hydraulic Jack With 2 Extensions (1.97" / 3.94") for Agricultural and Contractors’ Machinery, Trailers and Other High Clearance Applications • Minimum Height 14.21" • Maximum Height 24.06" (Optional F250 Extension Offers a Total Extended Height of 33.9") • Hard Chromium Plated Ram for Long Life • Built-In Safety Overload Valve • Hand-Operated Dead-Man’s Control for Optimum Safety While Lifting and Lowering • Ergonomic Handle With Push Buttons