Mithril dart tip

Mithril dart tips are made with one mithril bar at level 54 Smithing, granting 50 Smithing experience and yielding 10 dart tips. At level 52 Fletching, using feathers with them will make mithril darts, granting 11.2 Fletching experience per dart.

Smithing dart tips requires the completion of Tourist Trap, although you only need to get to the part where you make a dart tip to make them.