Width: 2.5 mm; Thickness: 2.5 millimeters; Length: 10 inches; Clasp: Lobster-Claw; Weight: 4 grams Features a solid brass core (a strong metal made of mainly copper & zinc) assures durability & longevity (even with regular everyday use) Plated with a thick layer (0.25 mils) of real 24k yellow gold bonded onto a solid brass core (metal weight of about 4 grams) Jewelry box microfiber polishing cloth & black velvet pouch included