Silvertone & - Ampersand - 1/2" Disc Class Of 2017 Congrats Engraved Necklace. Class Of Eternity Ring Charm Bead size is approx. 0.66 Inches long including loop. 1.3mm Box Chain necklace is 18"+2" Extender. Lobster claw clasp. The extender chain and lobster claw clasp makes this Necklace easy to put on. Stainless Steel Disc with Border is approximately 0.75 x 0.60 x 0.10 inches (HxWxD) including loop. Wonderful gift for graduation and marking an achievement. PLEASE NOTE: Our products are lead safe, but are not intended for children 14 years and younger.