Does anyone know who makes

Actually - I'm not sure now.  Kuzma's website doesn't name the company  - just says a Japanese company with 50 yrs of experience.  

Cartridges - Kuzma Professional Turntables, Tonearms and Accessories

And hence the question.

Probably Excel Corporation - they make Hana cartridges. Save a lot of money and get that new $1300 Hana instead of a $4K Kuzma!

Not exactly sure but I believe the ones with boron cantilever from Zyx.

G

I do not particularly care for Kuzma cartidges or Hana for that manner. People buy them because they are cheap which is fine. But, IMHO moving magnet and moving iron cartridge's own the under $3000 market. Moving coils do not start getting competitive until they reach $4000. They are less dynamic and they do not track as well. They come into their own with a current mode phono stage and ultra low impedance.
Then then is the The Stain Gauge cartridge. Could it surpass everything?
My daughter lives in NYC. On the way down to visit her we are going to stop by Soundsmith and have a listen. Should be a lot of fun.