I bought some header pin strips from Digikey. They were various sizes. Some were single, others were double. All were made by 3M. All had longer tails than normal, although I guess that's not significant.
All have sharp "barbs" on the ends of the pins. They snag everything including fingers. I file them down.
What's up with that?
Here's a picture. The sharp ones are on the top. Normal ones on the bottom.