[OEM Direct Replacement Part] Interchange number: C1611028, 7009-2PK, 21-0556-06, 7467IC, 21-0370, 210134, ML15-40, SL15-40-1, LGP6-120-40, GSNI-5100-40, SPD-GS-5100-40, SL35-40-1 [Common Uses] For ARE, Leer, SnugTop truck cap & camper shell windows, food truck window, hot tub cover, snugtop & truck cap & topper accessories parts. Quick tip: Always confirm your part number and dimensions for a hassle [Stable support] No more hit head from the lid [Details Parameters You Need] Extension length (hole to hole): 12.20 inch, Compression length (hole to hole): 7.48 inch, Force: 40 pound 178N(fit lid 32-40lb). Connector hole diameter 10mm, gas strut thread diameter 6mm [3-minutes Installation] Pop off old strut with screwdriver; bolt on new one. Done [Package content] 2 x 12in 40lb gas strut, 1 x guidebook. If you need additional mounting brackets, please purchase the bundle [Customer First Principle] 18 months replacement support. No more wasting time and money for maintenance The 12-inch, 40-pound gas strut supports lids measuring 16-24 inches wide and weighing 32-44 pounds. It reduces the effort required to open the lid and maintains the lifting force to keep it open, freeing the operator's hands. Primarily used for toolbox and camper shell windows.