Nails can be made of any metal. Steel nails are free-to-play; Bronze, iron, mithril and higher can only be used by members. Steel nails are needed for the Dragon Slayer quest, and nails of any metal are needed for the Great Brain Robbery quest. Nails are also used in the Construction skill, but after a certain level of logs, nails are not needed. To use nails, the player needs to have a hammer in their inventory. While using nails in the Construction skill, there's a chance of bending them depending on what metal the nails are made of and the player's construction level, with the chances lowering with better nails and higher construction level.