Pilot Capless fountain pen in grey and matte black has a vanishing nib, click to expose the nib and click for it to hide back into the body or the pen. It has a trap door which keeps the ink from drying out when closed. The Capless fountain pen is fitted with an 18k (750au) gold nib available in Fine, Medium or broad (Extra Fine and Stub are available with possibly a slightly longer leadtime).
It's click mechanism to expose the nib makes it behave like a ballpoint pen, but with the joy and softness of a using a fountain pen.
The Pilot Capless fountain pen comes with a Pilot converter (Con40) and a Pilot ink cartridge.