Opaque Solid Color Crystal Glass Abacus Beads Strands, Faceted, DarkRed. Size: about 4mm in diameter, 3mm thick, hole: 1mm, about 135pcs/strand, 17.9". Many customers are favor of these glass beads because of their reasonable price and bright luster. Suitable sizes will give you endless idea when designing all kinds of jewelry or crafts. So buy this and Save 30% OFF Opaque Solid Color Crystal Glass Abacus Beads For $0.44/strand @PandaHall.