Sealey 3290cx trolley jack 3tonne sealey 3290cx p this 3tonne trolley jack from sealey is a single piece hydraulic unit integral american cog type release mechanism and long two piece handle to reduce operator effort heavy duty castors and large saddle design ease positioning under vehicle fitted with safety overload valve and pump through valve to prevent handle locking at maximum ram extension p sealey 3290cx trolley jack 3tonne