Not much to explain here. But if you're looking for replacement parts, here they are.
Presta cores are universal and work with all Presta valves, not just ours.
Our bases will work on all our insert compatible valves, and should work with most others.
Our o-ring is sized to work with the recess in our valve nut.
If you have a set of first generation Hold Fast valves (the non insert compatible type) reach out for replacement parts for those. We still have parts for those as well.