We do have chain available in box lock and lobster lock. Please let us know if you would like any specific type of lock. The item has to be in its original unworn condition and should be with the tag. There should not be any damage on the item or the item should not be customized by any other jeweler. All gold and Diamonds are professionally tested and guaranteed.Our Diamonds Are 100% Natural And Are NEVER Treated Or CLARITY Enhanced......... The item "REAL 10k Gold Cuban Link Mens Chain Necklace 20 Inch 10MM Box Lobster lock short" is in sale since Wednesday, January 17, 2018. This item is in the category "Jewelry & Watches\Men's Jewelry\Chains, Necklaces & Pendants". The seller is "globalwatches10" and is located in Irving, Texas. This item can be shipped worldwide.