Obsidian bolts

Obsidian Bolts are the strongest crossbow bolts in RuneScape, and may only be fired from a Rune or Chaotic crossbow. They are also the only bolts to give a Ranged attack bonus.

It is not possible to make Obsidian bolts from a raw material, but players may affix feathers to unfinished obsidian bolts (with 75 Fletching) to produce Obsidian bolts. Unfinished obsidian bolts are only obtained as drops from the TzHaar citizens. Attaching flights to an Obsidian bolt grants 14 Fletching experience per bolt.

Obsidian bolts may only be tipped by Onyx bolt tips. A player must have a Fletching level of 83 to attach onyx bolt tips to Obsidian bolts. Attaching these tips grants 10.8 Fletching experience per bolt.