Black pickaxe

Black Pickaxe is a free-to-play item on the OSRS Grand Exchange in the weapons category.

In-game examine text: "Used for mining."

It has a Grand Exchange buy limit of 4 every four hours, a high alchemy value of 87 gp, and item ID 12297.

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Black Pickaxe currently has a flip margin of −63 gp, which isn't profitable to flip right now despite 1,059 trades over the last 24 hours.

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