Buy OSRS Adamant bolts
Adamant bolts are crossbow ammo in Old School RuneScape. They are fired from an adamant crossbow or better, so you need at least 46 Ranged to use them. Each bolt gives a ranged attack bonus of +100. They are members-only, tradeable, and stackable, so they take up just one inventory slot.
These bolts are a strong pick for mid-level ranged training and combat. They can be poisoned, but poisoned bolts cannot have bolt tips added. Players with 63 or 65 Fletching can attach ruby or diamond bolt tips instead. After enchanting, the bolts become ruby bolts (e) or diamond bolts (e), which are popular for boss fights.
Making adamant bolts takes work. Smithing them needs level 73 Smithing, and one adamantite bar makes 10 unfinished bolts. Finishing them with feathers needs level 61 Fletching and gives 70 experience per set of ten. Buying the bolts skips all of that, so you can stock up and get back to training or bossing right away.
Adamant bolts match broad bolts in power, but broad bolts need 55 Slayer and a rune crossbow. Adamant bolts work at a lower level, which makes them an easy choice for many players.