These are an older run of inverting beads from a previous manufacturer that run just a couple points small compared to our more recent runs, around .5 grains lighter per bead. so, the 4.0mm beads are closer to a 3.8 and so on.
So, we are offering these as a summer sale at 25% off our already very low tungsten bead prices! Finish is still the same great quality, just a slight size difference, so take advantage of this opportunity to stock up and save!