Drow Bolt of Stunning

Drow Bolt of Stunning is an enchanted bolt +1 which can stun enemies for 4 round (24 seconds) if they fail a save vs. death. It also deals 1d8+1 points of damage and it has -1 THAC0 bonus. Like all items made from adamantine, this will turn into Adamantine Dust when leaving the Underdark.This item appears in Baldur's Gate II: Shadows of Amn and Baldur's Gate II: Enhanced Edition.

Drow archers drop this item.

In-game description
"Drow Bolt of Stunning This item, like most drow equipment, is created using Adamantine, an alloy of adamantite that quickly turns to dust if removed from the Underdark. A target hit by this bolt must making a saving throw vs. death or be stunned for four rounds."