I have a variety of ballpoint pens, some were giveaways, some valued gifts,but with time they all need refills (no, I don't keep them all in a breast pocket). So I was delighted to receive 12 refills that fit almost all of them including the Sheaffer and Parkers. I also recently bought an NRA tactical pen and they fit that as well. Even better, they come with a little blob on the end to protect the ink until used. That smacks of good old old-time service to the customer.