These are official replacement O-Rings for the DOGE and IGNITION series which fits barrels of 22mm. If your O-Rings are torn or worn out and you are looking for that trademarked smooth glide and adjustment you had when new, then this kit will fix you right up.
The O-Rings for the top and bottom are the same, and each device requires 3 O-rings (two on bottom, one on top). Each replacement kit includes 10 new replacement O-rings giving you years of faithful service.
These are official replacement parts made by Congrevape, giving you best performance guaranteed.