on saleTWSBI 580 Steel Nib Unit

I love this nib. I always get great service from Goulet Pens.

This is an excellent, smooth writing, stub nib. It produces a bold, wet line with typical stub variations. I'd buy it again.

I like the easy swap and easy clean the design enables.

I bought this as an addition to my first TWBI 580 AL which I purchased with an EF nib. I like how this nib and feed flow and how it feels on the page. I am kinda nuts (positive nuts) for the quality and consistency I've gotten out of TWSBI, and this is right in line with that high quality.

JoWo nibs are very good, and an excellent value at their price. If you drop your pen and ruin the nib, you can replace it in about 10 seconds with a new nib assembly. **** one nib assembly off, then **** the new one on. You don't even need to remove the ink from the pen to do this. I have 3 TWSBI 580 pens, and a complete set of extra nibs (extra-fine, fine, medium, broad, and 1.1 mm stub) for them. I have used every one of these extra nibs, and all work just fine. Together with the particular nibs that came with the pens, I have 8 nibs and 11 unique combinations of nibs on 3 pens. Without the interchangeable nibs, I would have to buy 5 more pens to achieve this. The 5 extra nibs cost $150 less than 5 of the plainest 580 pens. And I'm ready to replace any ruined nib on my pens without waiting for a new one to be shipped to me. Such a deal!