Approximately 9x13mm TierraCast® antiqued copper plated hammertone cone ends. Antiqued copper plated components are often used to give jewelry a classic and vintage look. TierraCast uses "Britannia" casting alloy for cast pewter findings. For multistrand designs use wire, pins or cord to bundle ends inside of cone, and create a loop to attach to clasp. TierraCast Safety Compliance Info.