Kinzoku Clan

 The Kinzoku Clan is a group of ninja that originated from Iwagakure with the famous Steel Release kekkei genkai.

 The members of this clan possess the ability to liquify metal using Steel Release, then form objects with the metal using Magnet Release. To do this there must be a pre-exsisting metal source. For this the clan developted the Steel Transformation Technique, allowing the user to turn a limited amount of earth into steel by letting their steel release chakra flow into the earth.

Takeshi Kinzoku is well known for his mastery of the steel release style jutsu, and efficient in using the jutsu without losing much chakra despite the amount each jutsu uses. This clan has produced at least one Tsuchikage.

 Trivia