Using pure natural materials and environmental protection water paint. Great for people to do some craft work, such as key chains, necklaces, bracelets and much more. Bead Size: 6 mm/0.24 inches, Hole Size: 2-3 mm/0.08-0.12 inches. Please understand the 0.1 mm error in bead sizing may exist duo to manual measurement. There will be a slight yet harmless smell duo to beads processing problem, so please put the beads in an airy place before use.