Kos par Puca is a unique two-hole shape from Les Perles par Puca. Curved on one side and flat on the other it allows a variety of design options. Kos truly shines in a bezel project. Like all the par Puca beads Kos was created to fit with many other of the par Puca shapes. There are dozens of free patterns available for download in the Les Perles par Puca Pattern collection to keep you happily engaged with this lovely bead.