Steel Release: Steel Fist Technique

 By using the Liquid Metal Technique technique, the user can encase their arm in steel. The user can deal a powerful hardened punch against the opponent while being protected from direct contact with their target. If wanted, the weight of the rock can be increased to further increase the punch's destructive power.

Trivia

 * Takeshi Kinzoku has shown to perform this technique while incased in his Advanced Armor.