These chains are made with solid 10K yellow gold. They are solid real gold, not hollow or plated. Cuban link chains are specially known for their shine and strength. These chains have lobster locks for added security. Features: Made with solid 10k yellow gold Real gold, not hollow or plated Cuban link chain Lobster locks 3mm Available in your choice of 16, 18, 20, 22 or 24 Weight: 16- 2.0 grams 18- 2.2 grams 20- 2.4 grams 22- 2.6 grams 24- 2.8 grams