DIY Necklace Making, with Iron Wire Pendants, Natural Lava Rock Beads, Waxed Cotton Cord and Brass Snake Chains, Mixed ColorSize: Round: 24mm in diameter, 30mm long, hole: 5mm, 8pcs; Round: 19.5mm in diameter, 24mm long, hole: 4.5mm, 8pcs; Snake Chain: 18.5 inch(47.2cm) long, 1mm wide; extender chain: 45~52mm; jump ring: 4x0.8mm, hole: 2mm, 8pcs; Cotton Cord: 18.7 inch long, 1.5mm thick, 8pcs; Round: 12mm in diameter, hole: 1mm, 16pcs.