Actually got here quicker than Amazon Prime. Fit my antique mini-pen almost like it was made for it. One caveat. When I got it, it looked like there was only one refill and it was way longer than it was supposed to be. I was almost ready to send it back unopened, when it bent in the middle. It was actually the two refills stuck together head to tail so the order was correct. Once these two refills run out, I will be ordering again.