In order to operate correctly, all oil cylinders need to be connected with solid and flat surfaces. For example, using thin oil cylinders in sandy soil or loose surfaces will cause damage to the oil cylinders. Due to the different display and different light, the picture may not reflect the actual color of the item. Feedback is very important to us.It is impossible to address issues if we do not know about them! Faction is our ultimate goal. We work hard to earn your trust and future business. A If you receive a defective item, you may return it or ask for a discount. Due to time zones, our reply to your questions may not be immediately. If it's non-workdays, please kindly be patient and wait till Monday. This item is in the category "Business & Industrial\Hydraulics, Pneumatics, Pumps & Plumbing\Hydraulic & Pneumatic Cylinders". The seller is "scchen8" and is located in this country: US. This item can be shipped to United States.