5.8mm square-wire oval cable chain. Approximately 5.8x8mm links. Approximately 10-meter (32.8 feet) rolls. Not soldered. Steel. Antiqued copper plate has been darkened to provide a "distressed" appearance. Extremely strong! Use heavy-duty cutters and pliers. Bulk chain makes a great base for free-form beaded chain necklaces. Many jewelry makers use jump rings or split rings with clasps to finish the ends. Occasionally, the plastic spool is damaged in shipping. This should not affect the usability of the chain.