Yes, they look like sizing dies, but not lubing dies. I couldn't see the numbers on the outside, which is most likely the diameter of the die. They probably work the same as the Lee push through sizing dies, only not press mounted.
You would lube the bullets with either a liquid lube, or pan lube them by setting them in melted lube until it cools, and then cutting them out with a "cookie cutter" type tool of the proper size. This process is a royal pain, and I gave it up about 1968, when I first tried it.
Hope this helps.
Fred