Air/Hydraulic Bottle Jack: 20 tons/44092 lbs bottle jack is for lar size and heavy-duty applications. It integrates a pneumatic jack with a hydraulic jack into this one car bottle jack. It is for lifting heavy-duty machinery, industrial construction equipment, farm vehicles, and more. 6-5/8" Lifting Ran: With its powerful pneumatic and hydraulic power, our bottle jack can lift a maximum of 20 tons/44092 lbs and has a lifting ran of up to 10-1/4 in/26 cm to 20 in/51 cm. Labor-saving Dual Operations: Working pressure ran: 120 psi-200 psi. Manual lifting is also possible with the splicing handle. The design allows the jack to work securely even without power. Retractable Springs & Rod A compact structure with dual fast retractable springs to ensure the product can be successfully reset after use The height of the rod can be adjusted flexibly Rod adjustable height 318 in8 cm. Heavy-Duty Steel Structure: This pneumatic bottle jack is made of Q235 steel material, providing maximum durability and security. The highly rugd construction provides both power and security. With our bottle, there is nothing to worry about. Welcome and I wish you a happy life, my friend., Manufacturer: MJFVN