Introductions: Here I want to introduce this Lift Supports for you. It belongs to a kind of special industries for auto parts and the different models will use the different parts, so, you need to choose it carefully. And it is designed with simple that you can use it by yourself easily. The material of it is very good, strong and not easy to bad that you can use it for a long time. Don't wait any longer, order and try it right now.Features: 1. Simple to install with simple hand tools in just minutes 2. Hardened, chrome plated steel piston rod, rubber o-ring piston seal for controlled lift 3. Heavy gauge steel pressure tube provides long life. Teflon backup ring gives enhanced performance 4. Patented multi-lobe seal offers leak free operation and long life 5. Self clean piston assembly delivers smooth operation and consistent performanceSpecifications: 1. Interchange Part Number: 6137 2. Extended Length (inches): 18.98" 3. Compressed Length (inches): 12.01" 4. Vehicle Location: Tailgate 5. Placement on Vehicle: Left, Right, Rear 6. Compatible Vehicle: For Nissan Xterra Base 2005-2013 All Engine Sport Utility For Nissan Xterra Off-Road 2005-2013 All Engine Sport Utility For Nissan Xterra PRO-4X 2005-2013 All Engine Sport Utility For Nissan Xterra S 2005-2013 All Engine Sport Utility For Nissan Xterra SE 2005-2013 All Engine Sport Utility For Nissan Xterra SV 2005-2013 All Engine Sport Utility For Nissan Xterra X 2006-2013 All Engine Sport Utility For Nissan Xterra XE 2005-2013 All Engine Sport UtilityPackage Includes: 2 x Lift Supports Return Policy All of our items come with a 30-day free return policy. If you need to return, please contact us, let us know the detailed problem and send us some pictures for confirmation. We reserve the right to refuse any returns for objective reasons. Shipping Policy All of our items are shipped free with tracking numbers. Orders will be shipped within 3 working days upon receipt of payment. Most orders will be shipped within 1 working day. In most cases, shipping takes 8-12 working days.