I am pretty sure I have the pins you are talking about. They have small heads. Mine are light blue and yellow. They are long, as you said, and very sharp and thin and yes they go in like butter. I get them at JoAnn's. They don't always have them. I looked online and didn't see them, but I always get them in the store. They are my favorites and I am using them with Pinmoors. Let me know if you don't find them and I will pick them up for you and send them to you. They are a little more expensive and there aren't that many in the package, maybe 50 or 60 max. Good luck. Gerry