Katagon equipment (Tier 8) is the fourth strongest melee equipment found while Dungeoneering. It is particularly popular amongst mid-high level meleers as players tend to leave their attack and defence levels at level 70/75 (for the abyssal whip, godswords, barrows equipment and other popular combat items) and instead favour strength training over attack/defence in combat outside of the dungeoneering setting.
You must have 70 attack to wield the weapons, 70 strength to wield the maul, and 70 defence to equip the armour. Having 90+ in attack, and defence will make katagon items appear at the starting room.
To smith all pieces of Katagon, you need at least 79 Smithing and 70 Mining to mine the ore.