Pilot Custom 845 BB nib

Pilot Custom 845  <BB>  18K

The pen point of BB is a big spherical with a rich volume.
Writing by a wide contact surface that is formed on the big sphere, so it is possible to write thick in any direction.  Tips to enjoy a sufficient thickness is to write not twist too much.
This nib brings the fun of the "light and shade" and daring thickness, by its good ink flow and rich pen point.

Pilot Custom 845 BB nib Writing Sample