Sterling Silver Three Dimensional Barbell / Dumbbell Weight Necklace Oxidized Sterling Silver Height 16 millimeters (0.63 inch) x Width 7 millimeters (0.28 inch) Charm Weighs Approximately 1.3 grams (3.0 grams including 16" necklace) Thin Box Chain Thickness 0.7 Millimeters (1/32 Inch) Spring Clasp on Necklace