Not Sold Separately **Available only w/ purchase of choker/necklace** Permanent Locking Clasp BDSM DDLG Submissive Kink Fetish Custom Jewelr**Please read entire description** ***Not sold as a separate item. This is an add on upgrade you can purchase for any of my Day Collars, BDSM chokers, Slave chokers, necklaces, anklets or bracelets in place of extension chain and lobster clasp. You will need to measure the length you need properly since there will be NO room for extending. These are 925 Sterling Silver. Can be worn 24 7 if you are not sensitive to silver. Requires pliers to close, not