Mithril bolts (unf)

Mithril bolts (unf) are made by a player with level 53 smithing using a mithril bar on an anvil. You get 10 mithril bolts(unf) for each mithril bar. At level 54 fletching, you can add feathers to make Mithril bolts each bolt will grant 5 fletching experience. These are a popular choice when it comes to smithing experience, but it is only recommended for wealthy players.

This is also a popular choice for players who are power-levelling Smithing at places such as the Blast Furnace and is considered to be one of the fastest methods of levelling smithing experience in game. As such, it is recommended to use items like the Stealing Creation Hammer to save money due to the medium to high losses incurred. This item saw a drop in prices after the release of the quest Rocking Out.

Some players choose to buy the bolts unfinished then buy the feathers to add onto them for Fletching experience. They then sell them on the Grand Exchange for highest price usually taking a few gp loss per 10 bolts. The downside to this is that players have to manually click on the feathers and the bolts to make them as there is no "Make All" or "Make X" option. This results in repetetive clicking for players with large numbers of bolts to fletch.