If you service your own forks these oils give you a great way to tune your ride.
These fully synthetic suspension oils are completely blendable between weights for very precise tuning of your system.
A 500ml size is usually enough for 2-3 oil changes of most forks.
In our experience we have found these track very closely to the Fox range, and we would recommend replacing weight for weight on the first change before experimenting with different blends.
Check Bike Tech Tools website for a handy chart of the correct oil volumes for your fork.