Standard International Converter Schmidt K6 (Screwed)

Twisting the converter in was smooth and it clicked into place with zero wobble, so I can finally stop fiddling with cartridges mid-writing. The screwed mechanism keeps it snug against the section, and it holds a good amount of ink for a couple weeks of daily notes. Exactly what I needed to get my p

Twist it in and you can feel the threads catch securely—no wobble, no leaks after three weeks of daily use. It draws ink smoothly every time, and the screwed mechanism gives me way more confidence than the push-in converters I've had before.

The twist-and-lock fit is dead simple, and I’ve had zero leaks after three weeks of daily use in my pocket. For the price, it’s a solid little workhorse that just disappears into the pen.