When installing the shock shaft you should now place a few drops of shock oil on the threads of the shock shaft and then slowly and carefully push the shock shaft through the shock o-ring which has already been installed.
Hard-anodized, aluminum construction
Pre-installed o-rings. (same as stock)
Hard anodizing makes the contact surfaces more durable for longer life
Machined threads for easy, precise spring preloaded adjustment
Screw on aluminum o-ring cap eliminates the seal retainer pop off problem