Unwelded Aluminum Cable Chains, for Jewelry Making, with Plastic Spools, GoldSize: Chain: link about 12mm long, 9.2mm wide, 2x1mm thick, about 41.01 Feet(12.5m) Spool: bobbin: about 2.4cm wide, 14cm high; backplane: 9.3cm in diameter, 0.2cm thick, hole: 2.2cm, 1pc.