Techni Metal Base
I bought this base and its amazing. However, when my old base broke the pneumatic lift got stuck in it. But I can say that the base it self seems sturdy and rolls perfect.
Metal base cracked in two places on two seperate legs. Only 5 months out of warranty.
Shouldn't have been an issue to begin with. Durability of the metal base is not quality, but a $35 fix is better than buying a brand new chair.
This base is way better than the original one that comes with your chair! Should be included right off the bat. But definitely well worth it!!!
I originally had a plastic base. After a little over a year two wheels broke off in the exact same form suggesting a weak point in the mould. Replaced it with the metal frame and it has worked well so far. It sits a bit bigger than the original base but I felt that one was a bit low so no harm done. I have only had it for a couple weeks but I assume it will hold well.