[Most used for] 500MM 300N/67Lb Gas Strut for RV storage compartments,RV Door, Truck Cam Shell Tonneau Cover, Outdoor TV Cabinet, Shed Window, and other DIY applications[Parameter] Extended Length: 500mm/19.7in. Compressed Length: 300mm/11.8in; Force: 300N/67Lb shock. Mounting Hardware Needed: 10MM Ball Stud Mounting Bracket. Don’t included in the package[Warm Tips] 300N/67Lb gas strut. Super Strong! You couldn’t compress it by your hand! Suitable for lids or doors weighing between 143N and 196N (32-44lb)[Needed Know] If you purchase this shock as a direct replacement for Tonneau Cover or RV door, please measure the length from the center of the socket to the center of the socket before purchasing. Our gas spring is not suitable for all Tonneau Cover
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