400 Nickel Plated Split Rings Great for Connecting Clasps, Charms, Links & Other Jewelry This is a new set of 400 nickel plated split rings. Great for connecting clasps, charms, links and other jewelry. No soldering is necessary because they work like key chain rings. You receive: 200 Split rings that measure approximately 6 mm (1/4") in diameter 200 Split rings that measure approximately 9 mm (3/8") in diameter.