Giant Hair Crossbow

Giant Hair Crossbow is an enchanted heavy crossbow +3. This weapon gives the user a +3 THACO bonus and it adds 5 points of missile damage to any bolt fired with it. It weighs 11 lbs, has a speed factor of 7 and like any normal crossbow, this has a fire rate of 1 per round. The bow requires 15 strength to wield the weapon, instead of the usual 12. This weapon has nearly the properties as Heavy Crossbow +3, which is 1 lbs lighter and requires 12 strength, but the crossbows becomes available during Baldur's Gate II: Throne of Bhaal. This item appears in Baldur's Gate II: Shadows of Amn and this item will probably appear in Baldur’s Gate II: Enhanced Edition. It's sold by Ribauld at the Adventurer's Mart.

In-game description
"Heavy Crossbow +3: Giant Hair Though hard to verify, it is claimed that the bowstring of this crossbow is made from the hair of a frost giant. Whatever the truth, the weapon is incredibly hard to draw, although its accuracy and subsequent damage are well worth the strain required (strength of 15 or greater)."