The O-Ring replacement kit contains just about everything you need including grease. The detents were a little extra bonus, and nice to have. The reason I said, "just about everything you need" is, there are 3 more O-Rings that are not included. They are for the regulator. Believe me, that's ok because those O-Rings are deep in the Pistelle and not easily accessable. I wish there was a video that shows where all the O-Rings go and how to install them and where the MolyKote 33 grease goes.