Hongdian Fountain Pen Ink Converter, Pack of 5, Bore Diameter 3.4mm

Works well

These converters have all the right details built it. As other reviews have pointed out, the small spring in the barrel does a great job of knocking that drop of ink out of the corner. If you have even a small collection of fountain pens these are the replacement converters you find yourself looking for when the ink in you pens is not flowing well. They returned my pens to their free-flowing glory. All this at a very fair price!(check that your pens use the 3.4mm size)

These converters are the very same type as the converter that comes standard with the Hongdian “Forest” style fountain pens. So if you’re looking for replacements, this is the item you’ll want. Arrived quickly. Very satisfied

These are a loose fit in the LAMY Safari and slip out. I'm giving 4/5 because these technically aren't made for LAMY safari pens.

I've only used one of the converters, and it seems fine. I bought these as replacement converters for the PenBBS 308 since I had heard they would fit - but only one of the five converters fit, and it's a super tight fit, so if you're looking for a PenBBS converter alternative it may not be ideal. To be fair, they are not advertised for this pen, and I'm sure they will work just fine in a Hongdian pen (I have some of those too)

Feels very robust, and when I bought two packs of 5, I ended up with a total of 15 which is definitely more than I asked for. They also have a bit of a weight to them compared to other converters I have had.

Quick delivery as expected and good product.

The little stainless steel coil agitators are hard to find. You can depend on these to (1) have enough weight to go w gravity, and (2) never block your flow of ink. Well worth the $2 each-I put one in all pens.