The Tealios V2 are a boutique linear switch offered by ZealPC which features a 67g spring, Gateron-made housing, and a smooth, linear stem in Tiffany & Co. blue, no I'm not joking, the pantone for the stem is inspired by Tiffany & Co, and it's adorable. It sets itself apart from color from Zeal's popular purple Zealios, Hermes orange Healios, and pink Sakurios and Rosélios switches.
I bought a 68 pack of Tealios V2 from KBDfans, for $1 a switch, which is expensive especially when I have a 60% keyboard. I would definitely say it's well worth investing in the Teals if you are after the smoothest switches on the market, a close second in my eyes are the Gateron Ink Blacks.
What gives the Tealios its extremely smooth actuation is its stem legs, the stem itself appears to be made out of an outstandingly smooth plastic mould, and it shows in its construction where nowhere on the stem is rough to the touch. The legs are also angled perfectly to give the linear actuation of the stem a good balance between weight on the downpress and upstroke.
Even from factory unlubed, these stems and by extension the Tealios as a whole switch feel extremely smooth to use, it's one of the best linear switches to use stock in my opinion purely because of how smooth the stem has been made.
Despite its stock smoothness, I lubed my Tealios switches with a mildly-thick coating of Tribosys 3204 on the housing sliders as well as the entire stem, and this ultimately made the switch all users of linear switches should try. Zeal cracked the code for how to make the smoothest linear possible, and it's thanks to the ever-smooth stem.
Personally, after using these Tealios lubed with Tribosys 3204, I don't think I can settle for anything less anymore. I formerly used NovelKeys Creams and even those now feel scratchy thanks to my time with the Tealios. Same can be said for Gateron Reds where while they are smooth, they feel hollow and far too light.
The Tealios are a well-weighted switch which when paired with lube make the best linear switch in the game. If there was one thing to keep me from rating it a 100% switch, it would be the spring weight. I find 67g a little too heavy personally, although the weight also does accentuate the smoothness a lot, so I feel 67g is just the right spot. A spring swap to 62g might eleviate the heft a bit but like mentioned before, may reduce the feel of the actuation force and leave me wanting more out of the switch.