Dear Jorge: Through the email I received you writed Zen cartridge and this is different from Zanden.
If what you want is information for Zenn cartridges here it is:
http://www.vinylengine.com/cartridge_database.php?m=Zenn&t=any&mod=&sort=2&Search=Search&sty=&ovlo=&ovhi=&can=&dclo=&dchi=&stid=&masslo=&masshi=¬es=&prlo=&prhi=#thumb
Regards and enjoy the music,
R.
