【Applicable Scenario】17in gas strut lift support work for RV cargo door, boat hatch engineer cover, toolbox lid, truck camper shell, topper rear window, truck cap canopy, pickup truck toolbox. Euplokeer 17in gas shock is not compatible with all brands of camper shells on the market, please refer to the model specifications to purchase. | 【Compatibility】Leer topper replacement struts compatible with interchange numbers SX172P10, SL16-10-1, SL16-10, ML16-10, SE172P10. We recommend confirming compatibility by comparing the cylinder part numbers of the original gas springs before purchase. | 【Product Basic Information】This listing includes 2 gas shock for Multi Purpose. Extended Length 17.01IN. Compressed Length 10.19IN. This gas strut for camper shell is EZ to install. Only a flat head screwdriver is required. | 【How to choose】Get the pound rating or OEM interchange number on your old cylinder, then measure the extended length of your old lift support. Compare the pound force, OE number, and measurement to the our 17in gas strut. | 【Care from the Euplokeer brand】24 hour email response and 15 month product exchange service. Euplokeer is much more than that. Please feel free to contact us at any time with any questions.