This kit includes all the gaskets and o-rings to rebuild your E-61 Grouphead. 16 Pieces total: Grouphead Gasket (8.5mm), Shower Screen, Gigleur Filter Screen, O-Ring for Mushroom Valve (a thinner one and a thicker one so you can use the one best suited to your grouphead) , Gaskets for Lever, Closing Gaskets for Valves, Teflon Gaskets, and Haynes High-Temperature Lubricant. Please see the note below prior to ordering. See variation options below if you prefer to exclude or choose another GH gasket and shower-screen, such as the Silicone gasket in the 3 different thickness options or the different shower-screen options, including the IMS Precision screen. To easily view our E-61 grouphead gasket options, use this link and enter "E-61" in the "search this collection" search bar. And this link will take you to E-61 and other shower screens, so do make sure you choose a cup-style screen that specifically says it's for the E-61 grouphead. Fits: All E-61 Isomac Models such as Amica, Tea, La Mondiale, Millennium, Professionale, Pro, Rituale, Tea, Zaffiro ECM Expobar Rocket Quickmill Other machines with the same E-61 Grouphead. Please Note: Depending on the wear of your group, additional parts might be needed while replacing the “soft” parts, such as: springs, plungers, lever shaft. Due to the small thread size of their pins, grouphead valves often break during disassembly. We recommend disassembling your valves prior to ordering. Twist gently back and forth, back and forth, to see if they’ll loosen successfully. If not, apply just enough heat to warm the threads without melting the gaskets and try again, reapplying heat when necessary. To watch our Reassembling an E-61 Grouphead YouTube video, please visit this link: https://youtu.be/yQPqwyReF2Q