Kor mak bracelets are a pair of bracelets that link the wearers. If the two wearing the bracelets should get more than one hundred feet from each other, they will begin to feel ill. Cronus used them when he wanted his Jaffa to transport a prisoner. If the prisoner escaped, they would both be killed by the bracelets, punishing the jaffa for his incompetence. Vala Mal Doran used the bracelets on herself and Daniel Jackson to ensure that she would get a fair share of the treasure hidden in Avalon. (SG1: "Avalon")