Attributes:Appx Weight in Grams by Width/Length: (each item will vary slightly)0.6 mm width: 16 in = 0.59 gr, 18 in = 0.64 gr, 20 in = 0.7 gr, 24 in = 0.81 gr0.75 mm width: 16 in = 0.82 gr, 18 in = 0.89 gr, 20 in = 0.99 gr, 24 in = 1.15 gr0.8 mm width: 16 in = 1.04 gr, 18 in = 1.16 gr, 20 in = 1.19 gr, 24 in = 1.41 gr0.9 mm width: 16 in = 1.44 gr, 18 in = 1.56 gr, 20 in = 1.7 gr, 24 in = 2.01 gr1.3 mm width: 9 in = 1.38 gr, 16 in = 2.22 gr, 18 in = 2.43 gr, 20 in = 2.67 gr, 24 in = 3.17 gr1.8 mm width: 16 in = 3.12 gr, 18 in = 3.49 gr, 20 in = 3.88 gr, 24 in = 4.59 gr2.2 mm width: 16 in = 4.47 gr, 18 in = 5.01 gr, 20 in = 5.5 gr, 24 in = 6.59 grOther Specs:Clasp / Connector: LobsterManufacturing Process: CastedManufacturing Process 2: Machine MadeChain Type: CableMaterial: GoldPurity: 10K