Price is for 10 lcolorful flower with rhinestone bead caps that fit 16, 18, and 20mm beads. (color mix chosen at random) Bead caps are 16mm in size and made of a tarnish resistant metal alloy. with a rubber coat of color on top.  See example photos for how they fit on 20mm and 16mm beads (pens and beads not included). Holes are approximately 2.7mm.