Indian Rosewood, Ebony , or Cocobolo.

I offer Indian rosewood, ebony, or my favorite — cocobolo.  I mostly use Cocobolo because it has a very high natural oil content so it polishes up to a glass-like slick finish.  Width at the nut is whatever you want.

Nuts and saddles are custom made from unbleached cow bone. Very hard.
Bridges are “belly bridge” style made from ebony or cocobolo.