Rat needles...

Obtaining
Talk to Ant Emicheun in Astrub underground (6,-19). You must be level 6-7 to take this quest.

Step 1 : ... or Xelors' fangs.

 * Description : The Xelors seem to be interested. According to Ant, they would like to put some hands on their hourglass...well he's not really sure.
 * Objectives : Bring to Ant Emicheun: x10 Rat fang
 * Rewards : 1500 XP, 100 kama

Acquire 10 Rat fang and talk to Ant Emicheun to finish this step and the quest.

Completion
This quest is repeatable. It does not show up in "archived quests", and can be taken as many times as you want.