Steel arrowheads

Steel arrowtips are items that can be made at 35 Smithing, granting 37.5 experience per steel bar. They can be fletched into steel arrows at level 30 Fletching when used with headless arrows, which are made by using arrow shafts with feathers, granting 75 experience per 15 arrows made.

Spawn
There is an arrowtip spawn in the northeast corner of the Earth warrior room in level 10 Wilderness in the Edgeville Dungeon