Buy RS3 Bull horns
Bull horns are a members only item in RuneScape 3. Players get them by checking produce from bulls at the player-owned farm. Level 49 Bulls also drop them, one at a time.
The main use for bull horns is Herblore training. At level 80 Herblore, players mix bull horns with a three-dose super hunter potion to make an extreme hunter potion. Each mix gives 180 Herblore experience. This makes bull horns a key ingredient for anyone who wants to make or use extreme hunter potions.
Bull horns are tradeable and noteable, so they are easy to buy, sell, and carry in bulk. They are light at 0.02 kg. They cannot be equipped and do not stack. They can be disassembled for 0.1 experience, with a 98.9% junk chance. Disassembly gives Simple parts most of the time and Variable components on rare occasions.
The examine text says, "I'm guessing you messed with the bull. Used to mix extreme hunter potions." Bull horns were added to the game on 3 September 2018.