Bane arrows are made by using Tune Bane Ore on bane ore, smelting the ore, smithing the bars on the anvil in Kethsi, and fletching them.
Tune Bane Ore can enchant the arrows and bolts to be more effective against certain creatures. To cast the spell, one must target the item dropped by the creature which the ore has to be attuned to, rather than casting it on the ore.
When used on their proper targets, bane arrows and bolts provide a 18.75% damage increase to abilities and auto-attacks. This equates to slightly higher damage than dragon arrows when used with a Dark bow or tier 4 Starfury bow. Furthermore, they also appear to give an accuracy boost. This boost is negligible, however, and ranging high-level monsters resistant to Ranged (such as the mithril dragon) remains unfeasible.
Despite this available damage increase, the base damage on bane arrows and bolts is only that of rune arrows and bolts. Using a tier 70 bow or crossbow with matching ammunition would offer better damage and accuracy.
Producing the unfinished arrow gives 62.5 experience and produces 50 unfinished arrows per bar.
The following is a list of requirements needed to create the bolts (all skill levels are boostable apart from the quest's requirements):