Attributes:Appx Weight in Grams by Width/Length: (each item will vary slightly)1.3 mm width: 7 in = 1.92 gr, 8 in = 2.04 gr, 16 in = 3.75 gr, 18 in = 4.29 gr, 20 in = 4.68 gr, 24 in = 5.69 gr, 30 in = 6.9 gr1.5 mm width: 7 in = 2.87 gr, 8 in = 3.27 gr, 16 in = 6.18 gr, 18 in = 6.74 gr, 20 in = 7.6 gr, 24 in = 9.11 gr, 30 in = 11.16 gr2 mm width: 7 in = 4.08 gr, 8 in = 4.74 gr, 18 in = 9.34 gr, 20 in = 10.77 gr, 24 in = 12.63 gr, 30 in = 15.66 grOther Specs:Clasp / Connector: LobsterManufacturing Process: Die StruckManufacturing Process 2: ExtrudedChain Type: FrancoMaterial: GoldPurity: 10K