Miyuki Delica 15/0 cylinder seed beads are preferred for delicate bead weaving projects, as well as designs that combine them with larger Delica Beads and seed beads. These weaving beads are precision cut and have a large hole size for multiple thread passes. Size 15 Delica Beads measure 1.3mm (diameter) x 1mm with a hole size of 0.65mm. There are approximately 350 beads per gram and about 25 beads per inch.