These glue discs and ear wire sets are a great start a wonderful fused glass jewelry project. The discs measure approximately 9x11.4mm and are made of silver plated jeweler's metal. The bail is small and can accommodate most French wires and other thin stringing materials. The wires are 21 gauge with a 4mm outer loop. You will receive five pairs (ten each wires, glue discs and French wire keepers).