I offer ceramic "pen" scrapers, and classic triangular scrapers. The ceramic scraper is used vertically like a pen, it is very good for work on small surfaces.
Triangular scrapers are mainly available in 4 blade sizes:
Available in short handles (in my opinion more ergonomic) or classic long handle.
The "Nano" is to be used for details only. For precise work (corrections, mezzotint, etc.), choose the "precision" with magnetic protective cap or the "medium" which has more rigidity. The big scraper is useful if you need more power.
The "Nano" is tungsten carbide and the ceramic is ceramic. These are extremely hard materials, they can only be sharpened on a diamond stone. All the others are in high speed steel, a little less hard but easier to sharpen (water stone, india, arkansas). The large scraper is made from harder HSS steel than other HSS scrapers.