Black sq shield

Black Sq Shield is a free-to-play item on the OSRS Grand Exchange in the armour category.

In-game examine text: "A medium square shield."

It has a Grand Exchange buy limit of 125 every four hours, a high alchemy value of 691 gp, and item ID 1179.

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Black Sq Shield shows an active flip setup with a margin of +51 gp and 2,218 trades over the last 24 hours.

At the buy limit of 125 every four hours, max profit per cycle is about 6.4k gp — high margin with healthy liquidity.