Silky 2-Hole Beads Czech Silky 2-Hole Beads are 6x6mm in size with two parallel holes on the diagonal. The tops of the Silky beads have a raised bump that runs perpendicular to the diagonal thread path. For most colors/finishes this raised bump on the top is not an issue, however for some of the vacuum finishes - it can appear that the beads are not uniform. In the photo above, you can see that the vacuum finish is applied to only one side of the beads. This is due to the process used to add the finish. If you prefer to have the finish on both sides of the Silky beads, look for the "FULL" coatings in the product descriptions. You can also review the product photos to see if the coating is on both sides. In the examples below, the beads on the left have the coating on one side only and the beads on the right have the "FULL" coating on both sides.