These hot rocks are a great replacement for lava rocks and will give you that authentic aroma of a charcoal barbecue. If it's simply a matter of taste then use these with your hot rock basket on a 2, 3, 4 or 6 burner Outback model. These hot rocks will offer you all the benefits of lava rock without the inconvenience or hazards associated with lava rock. These hot rocks have a uniformed shape with a flat bottom and a sloped top to guarantee you with even heat distribution when compared with lava rock. The sloped design means that fats and juices will run off onto the drip tray or evaporate for that great charcoal flavour. You'll get evenly cooked tasty meats on your barbecue and eliminate any grease flare-ups too. They are made from slate, ceramic and a fine mix of oakwood particles which has been hardened to give it a consistent shape and finish. It's easy to keep these rocks organised with a hot rock basket which is also available. Features and Benefits An alternative to lava rocks