Granite clamp

The Granite clamp is a members-only Old School RuneScape item — “A strong clamp, used for hardening granite maul blocks.”. Its Grand Exchange buy limit is 50 per 4 hours. Right now it buys at 1,257,000 gp and sells at 1,426,475 gp — a net margin of 140,946 gp (11.2% ROI) after the 2% Grand Exchange tax of 28,529 gp. High alchemy yields 3,000 gp.

To flip it, place a buy offer near 1,257,000 gp and a sell offer near 1,426,475 gp; the spread minus GE tax is your profit. Confidence figures are model estimates from live OSRS Wiki prices, not guarantees — flip responsibly.