[H1212GS Struts Info]: Extended length: 26.97 Inch, Compressed length: 15.17 Inch. 45 Lb / 200 N per strut, 2 PACK. PACKAGE INFORMATION: 27 in 45 lbs Gas Strut Spring Shock X 2; Installation guide X 1 | [OEM Number]: ST270edi2-45, St270edi-45, St270ed1-45, St270ed12-45, St270p45ez10,St270pu45, ML2645, ML26-45, RSIH1212GS, SL2645, SL26451, SL26455 these part number fit 27 inch 45 lbs struts | [Usage Scenarios]: Replacement parts of the pickup truck undercover bed cover parts, tonneau cover, trailer door, boat engine cover,hatch cover.Note: DO NOT compress them by hands before install | [Install in Minutes]: Took about 5 minutes to install. Just need a screwdriver to remove the clips on the old shocks, and the new ones just snap right on.No more propping the lid with a stick | [PAMAGOO Support]: PAMAGOO will provide you with professional customer service before and after your purchase and offer 18-months support