Phlebo Buffer UFS Washers are made to fill the void between your frames ufs holes and the soulplates ufs pegs when using our Buffer for a more solid lockup. All new Phlebo Buffer v2 will have these included. But for those of you that have the originals and want this new feature, we are offering them separately as well to upgrade your v1. The v1 are still slightly thicker than the v2 so it won't be exactly the same, but very close. We want to save you money where we can.