Attributes:Box chainLobsterPolishedSterling silverTwistedAppx Weight in Grams by Width/Length: (each item will vary slightly)1.25 mm width: 16 in = 2.27 gr, 18 in = 2.55 gr, 20 in = 2.84 gr, 24 in = 3.41 gr, 30 in = 4.26 gr1.35 mm width: 16 in = 2.79 gr, 18 in = 3.22 gr, 20 in = 3.59 gr, 24 in = 4.31 gr1.75 mm width: 16 in = 4.64 gr, 18 in = 5.18 gr, 20 in = 5.48 gr, 24 in = 6.98 gr, 30 in = 8.72 gr2.25 mm width: 16 in = 7.37 gr, 18 in = 8.69 gr, 20 in = 9.35 gr, 24 in = 11.22 gr, 30 in = 14.02 grOther Specs:Clasp / Connector: LobsterFinish: PolishedItem Weight U/M: gmManufacturing Process: Wire FormedChain Type: BoxChain Type 2: PendantMaterial: Sterling SilverPurity: 925