Sterling Silver Closed Jump Rings - Twisted Circle shape 18 ga - 6 mm ( 20 pcs ).
Amazon.com: 925 Sterling Silver Lobster Clasp with Closed Jump Rings,Necklace Clasps and Closures Lobster Claw Clasp Suitable for Jewelry Making Findings and Bracelets
SS JUMP RINGS-- 925 Sterling silver-- Closed and open-- 4mm, 5mm, 6mm, – Bead Boat
Amazon.com: 925 Sterling Silver Lobster Claw Clasp with Closed Jump Rings for Necklaces Bracelet Or Jewelry Making, Made in Italy.10mmx4mm(0.39 x 0.16 inch) : Arts, Crafts & Sewing