10 pieces x ITALIAN STERLING  SILVER SPRING ROUND RING CLASP WITH OPEN JUMP RING 

clasp : 6 mm in outside diameter

with open jump ring : 3.2 mm in outside diameter, about 0.75 mm wire

.925 stamped

Made of solid Sterling Silver

(Please note that the lobster clasp is made of solid sterling silver except the small metal spring inside the joint to keep the clasp closed automatically!)