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.