One pair (qty 2) of retention o-rings for THE Scope Bumper™. Fits all models.
These are the same equipment that our products originally ship with, which are a higher grade of material than the ones you typically find available in hardware or plumbing/hydraulic supply stores.
We have tested these extensively with our products and have found them to be of a higer quality and lifespan. They tend to not lose their stretch, are rated for better UV resistance, and higher temperature exposure.