Once gassed or oiled it will not be accepted for return even if sent back. If you have gassed or oiled the machine and are having problems, you will need to take it to an authorized service center. How to measure a hydraulic cylinder??????Welded Double Acting Hydraulic Cylinder Bore: 3" Stroke: 10" Rod: 1.5" Retracted: 18" Extended: 28" Pin Size: 1" Port Size: SAE 8 Column Load: 21,000 lbs Work Pressure: 3500 PSI Color: Black. This item is in the category "Business & Industrial\Heavy Equipment, Parts & Attachments\Heavy Equipment Parts & Accessories\Hydraulics". The seller is "magister_hydraulics" and is located in this country: US. This item can be shipped to United States.