Kurapika can conjure a unique weapon -- five chains that extend from his fingers on his right hand. Some of the fingers were specially designed to deal vengeance on the Phantom Troupe members. To increase the effectiveness of his chains against them, Kurapika created a contract with his nen, allowing him to gain more power through completing different conditions and adhering to certain limitations.
Holy Chain[]
Shaped like a cross, it cures wounds by drawing from Enhancement abilities. When Kurapika is in his Specialist state, it can heal serious injuries, such as a fractured arm, within seconds.
Chain Jail[]
Shaped like a hook, it wraps around spiders and restricts their movement. It also forcefully causes its prisoners to enter Zetsu, shutting off their aura and preventing the use of Nen abilities. It is only possible to escape from the Chain Jail through brute force. Kurapika imposed a limitation onto this chain, so that it can only be used to deal with members of the Phantom Troupe. If this condition is violated, Kurapika will die. This limitation was needed in order to increase the strength of the ability. The chain is so powerful that Uvogin, the strongest in physical strength amongst the Troupe, couldn't break free.
Dowsing Chain[]
Shaped like a ball and chain, Kurapika uses this frequently under normal situations, for defensive and offensive purposes. It is also useful for other investigative activities, like determining the location of missing individuals. He also uses this chain to identify if someone is lying. It has a small ball-like weight at the end which moves in the direction of whatever he is dowsing for.
Judgment Chain[]
The Stake of Retribution, a blade on the end of the Judgment Chain, enters the victim's body and wraps around the heart. Kurapika sets two conditions and if the victim violates either one, the chain crushes their heart, killing them. It can only be used while Kurapika's eyes are scarlet. Kurapika himself has a blade wrapped around his heart, which he used to set the limitations for the use Chain Jail ability.
Steal Chain[]
A chain shaped like a small syringe at the end, Kurapika uses it to steal other Nen users' Hatsu. To do this, he needs to inject the syringe into them and retrieve the ability. Once an ability is stolen, Kurapika can use it for himself, or others (explained below). Additionally, the target for Steal Chain will be forced to enter a state of Zetsu while their ability is being stolen, thus rendering them unable to use their Hatsu after it's been taken away from them. A stolen ability can only be used once before it is returned to its owner.
Stealth Dolphin[]
A special Nen Beast conjured by Kurapika, it's a talking dolphin with a visor and syringes attached at the end of each of its pectoral fins. The main ability of Stealth Dolphin relates heavily to Stealth Chain, as its purpose is to analyze the abilities that Kurapika gives to it. It acts as a sort of storage system for stolen abilities, and Kurapika can bring it out to use the stolen Nen ability for himself or lend it to another person (note that said person doesn't need to be a Nen user themselves). Additionally, Stealth Dolphin can only be activated during Emperor Time. Another important thing is that Stealth Dolphin has a glaring weakness to it — it cannot be deactivated unless the stolen ability stored in it is used, thus forcing Kurapika to keep Emperor Time active until he returns a stolen Hatsu to its owner. This prevents Kurapika from stockpiling several stolen abilities at once, like Chrollo Lucilfer does.
Emperor Time[]
When Kurapika's eyes shift into scarlet, he changes from a Conjurer to a Specialist. This ability allows him to utilize all the types of Nen to 100% efficiency. In the manga, Kurapika explains this using the terms "level" and "force/accuracy": his "levels" in various Nen categories remain the same during Emperor Time, however, his force and accuracy for every category is raised to 100%. Thus, if Kurapika's level in conjuration were 10, his level in emission would be 4, and during Emperor Time, he would be evenly matched against a level 4 emitter at 100%. Outside of Emperor Time, his force and accuracy in emission would at most be only 40%.