Steel nails

Steel Nails is a free-to-play item on the OSRS Grand Exchange in the bars category.

In-game examine text: "Keeps things in place fairly permanently."

It has a Grand Exchange buy limit of 13,000 every four hours, a high alchemy value of 1 gp, and item ID 1539.

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Steel Nails currently has a flip margin of +0 gp, which isn't profitable to flip right now despite 2,867,082 trades over the last 24 hours.

Items with negative or zero margins like this are better watched than actively flipped until the spread widens.