No feathering
No Bleed through
Excellent flow
Good lubrication
Some good shading depending on your nib and paper
It's not just bulletproof, it's part of the Warden Ink series. It is the most fraud resistant ink available. (see comp. below)
Comes in a 3 oz. bottle
No nib creep.
附一位朋友的說明"showthrough"跟"bleedthrough",可以參考看看。 Showthrough and Bleedthrough are actually 2 different things. When you write on paper with a fountain pen and turn to the back of the paper, you may see a shadow of the ink. This could be very faint or rather dark. This is what is called showthrough. If the ink has penetrated the paper and appears on the other side, then its called a bleedthrough.