Adamantine Sealing Chains

A jutsu unique to Kushina Uzumaki, she is able to mold her chakra into chains which can restrain targets. With it, she was able to restrain the Nine-Tailed Demon Fox in Naruto Uzumaki's mind, and trip it up. These chains also made up Kushina's seal, pinning the Fox to several spikes in her mind.

While she was near death, Kushina was able to use these chains in the physical realm and restrain the Demon Fox, enabling her husband, Minato Namikaze to use the Dead Demon Consuming Seal.