Set of PBM hydraulic roller lifters. I never ran them. Bought them for a project but decided to skip the roller cam upgrade this year and just go with another flat tappet. I'm pretty sure that the guy I bought them from said they had about 120 hours on them but who knows. From what I can see light scratches from moving up and down in the lifter bores.
Here's a link to them. Guess they sell under the Erson name now.