Sturdy all-steel construction, quick-fit handle, and safety overload valve. Heavy-duty hydraulic bottle jack is robust, stable, and safe with a large base and easy height-adjustment screw. Conforms to EN1494/A1:2008. Sturdy all-steel construction, quick-fit handle, and safety overload valve. Heavy-duty hydraulic bottle jack is robust, stable, and safe with a large base and easy height-adjustment screw. Conforms to EN1494/A1:2008.