This is for the seal to rebuild the hydraulic cylinder that locks your retractable roof in place with a Multi Page Illustrated Guideline. The o-ring in the kit is an upgrade to the OEM seal, which is not capable of withstanding the aggressive/corrosive hydraulic fluids. The Nitrile Rubber compound used in this seal is exceptionally resistant to petroleum based oils, found in hydraulic fluids used in the convertible top hydraulic system. Fits the following vehicles 1998-2003: Mercedes Benz…..W208….CLK-Class Convertible A Multi Page Illustrated Guideline is included and PICK tool set. For repair of Mercedes Benz part number: Rear Bow Latch Cylinder 1298001672 Check out my other items! www..com | Cross Sell, Free Cross Sell, Cross promote, Marketing, listing Apps, Apps, Application PLEASE READ Shipping Alert Currently The United State Postal Service are experiencing delays with some mail deliveries, due to the current environmental situation, office closures, volume of mail and lack of transportation. Mainly associated with but not limited to First Class They have indicated to us that in some cases it's taking a minimum of 10 business days Please note if your package is delayed, which can be seen from the tracking number we provide, please be patient as it's not our fault. Also we advise you to use the tracking system on the USPS website as it's more accurate and up to date.