Attributes:Appx Weight in Grams by Width/Length: (each item will vary slightly)0.5 mm width: 16 in = 0.31 gr, 18 in = 0.32 gr, 20 in = 0.35 gr, 24 in = 0.42 gr0.7 mm width: 16 in = 0.64 gr, 18 in = 0.7 gr, 20 in = 0.78 gr, 24 in = 0.92 gr0.95 mm width: 16 in = 0.72 gr, 18 in = 0.84 gr, 20 in = 0.9 gr, 24 in = 1.08 gr1.15 mm width: 16 in = 1.03 gr, 18 in = 1.15 gr, 20 in = 1.25 gr, 24 in = 1.5 gr1.35 mm width: 16 in = 1.27 gr, 18 in = 1.43 gr, 20 in = 1.6 gr, 24 in = 1.92 gr1.55 mm width: 16 in = 2.21 gr, 18 in = 2.49 gr, 20 in = 2.79 gr, 24 in = 3.22 grOther Specs:Clasp / Connector: Spring RingItem Weight U/M: gmManufacturing Process: Machine MadeChain Type: CableChain Type 2: RopeMaterial: GoldPurity: 10K