Ancient construct

Ancient constructs are level 34 Golems that can be found in The Broken Halls. They have a 100% chance of dropping any one piece of steel equipment, including claws, boots and gloves

Tactics
Ancient Constructs are weak to crush attacks, and have a 35% chance to be stunned for five seconds upon being hit by a blunt weapon such as a hammer or mace.

Trivia

 * These are the only fully-metal Golems so far seen in Runescape, apart from those created in Monster Crafting.