Adamantine Sealing Chains

A jutsu unique to Kushina Uzumaki, she is able to mold her special 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 Nine-Tails down with several spikes in her mind.

While she was near death, Kushina was able to use these chains in the physical realm and restrain the Nine-Tails, enabling her husband, Minato Namikaze to use the Dead Demon Consuming Seal. This involved five chains emerging from her back and burrowing into the ground, after which they would emerge and crisscross multiple times over the target, holding them down.