You need to unlock Mechagon and its daily quests on your lvl 10. It is done through a questline beginning with
The Legend of Mechagon. The last quest in the questline (quest nr. 17, that requires you to do the Mechagon dungeon, which you cannot enter at lvl 10) can be completed without actually doing the dungeon. Just talk to the quest giver, and he will have an option to autocomplete the quest immediately. After this, you will be able to do all the dailies on Mechagon Island. The daily quests will give you reputation (cirka 1000 rep pr day, give and take), and the materials you need to craft the rings.
At Friendly reputation you will automatically get access to craft lvl 70 rings; at Honored you can buy a blueprint to craft lvl 76 rings; but you need Revered reputation to buy the blueprint that gives you access to crafting the lvl 80 rings. The item you linked in you first post is the lvl 70 ring version, so just be careful not to craft that one if it is the lvl 80 version you want! The lvl 80 version is this one:
Extraordinary Adventurer Augmentation and is acquired from this blueprint:
Blueprint: Extraordinary Adventurer Augment
So, it can be done, but prepare for a long grind, as the crafting process not always results in a ring - sometimes you get a trinket instead (which has a lvl 50 requirement), so theres a bit of rng involved. But Mechagon is a fun place to farm not least because you can fly around at lvl 10 by using an
Anti-Gravity Pack! GL and happy hunting