This model was made when the avatar specification for vrchat was 20,000 polygons, and it's supposed to use NPR's toon shader.
She's a complete mechanic, and her skin-like parts are not life-like, but a soft but hard quilted exterior that looks like woven silicone and plastic. It will discolor due to reaction and pressure.
It is sold for the Japanese market at the following sites.
https://booth.pm/ja/items/1939437