Chisel

Chisel is a free-to-play item on the OSRS Grand Exchange in the skilling category.

In-game examine text: "Good for detailed Crafting."

It has a Grand Exchange buy limit of 40 every four hours, a high alchemy value of 1 gp, and item ID 1755.

View on OSRS Wiki

Chisel shows an active flip setup with a margin of +25 gp and 2,033 trades over the last 24 hours.

At the buy limit of 40 every four hours, max profit per cycle is about 1.0k gp — high margin with healthy liquidity.