Easy up and down function handle Large bottom plate for added stability Heavy Duty designed air-bags ? safe and able to handle day-to-day use Popular choice for collision repair shops for use with frame machines Ideal for use in brake, suspension, tire/wheel and many other applications 3" Extension Included Lifting Capacity: 2 Tons | 4,000 lbs. Min. Height: 4.5" | 115 mm Max. Height: 17" | 430 mm Weight: 29.6 lbs. Working Air Pressure: 100-145 PSI 1 Year Warranty