The small, heavy lock on a girl’s slave collar
The small, heavy lock on a girl’s slave collar, incidentally, may be of several varieties, but almost all are cylinder locks, either of the pin or disk variety.
In a girl’s collar lock there would be either six pins or six disks, one each, it is said, for each letter in the Gorean word for female slave, Kajira;
the male slave, or Kajirus, seldom has a locked collar; normally a band of iron is simply hammered about his neck; often he works in chains, usually with other male slaves; in some cities, including Ar, an unchained male slave is almost never seen;
there are, incidentally, far fewer male slaves than female slaves; a captured female is almost invariably collared; a captured male is almost invariably put to the sword;
Assassins of Gor p.73