Black Receiver

This technique creates multi-purpose black rods capable of receiving the user's chakra across vast distances.

Background
Despite the black receivers being a trademark of the Rinnegan, Madara was able to produce them without possessing the dōjutsu while connected to the Demonic Statue of the Outer Path via Hashirama's artificial body, and stated that they were a manifestation of his will in physical form. At times, black rods identical to those that Madara created protrude from the Demonic Statue's midsection; in one instance, these rods pierced Nagato's back when he summoned the statue, draining his life force while allowing him to control it.

These rods have also protruded from Obito's artificial right half on several occasions, first occurring when he awakened the Mangekyō Sharingan and Wood Release. Many years later, Madara attempted to control Obito by causing black rods to emerge and cover his entire right half in a black substance, allowing him to manipulate Obito's actions using his chakra. These rods emerged from Obito's right half one final time when Black Zetsu first attached to his body and forced him to revive Madara.

Overview
The user can generate these receivers from their body, creating them in various shapes and sizes to fit the situation. They can be generated with a bladed tip and employed offensively, and have shown to be capable of piercing through the likes of Sage Mode users. According to Shizune, the rods act as high-frequency chakra demodulators, which become appreciably warm to the touch while receiving chakra. To make best use of the receivers, the user must transmit their chakra from the closest and highest point possible. The user can continuously change the frequency of the transmitted chakra signals to prevent being detected. They receivers have demonstrated a degree of durability, even displaying some resistance when struck by a Rasengan. As they are connected to their creator's chakra, the rods will disintegrate in the same manner as the Truth-Seeking Balls if their creator is killed or similarly incapacitated.

Usage
Nagato was able to remotely control six bodies he referred to as the Six Paths of Pain by fashioning the receivers into piercings and implanting them in corpses. Each Pain was given copies of his Rinnegan and access to one of the powers of the Six Paths Technique, as well as the ability to produce additional receivers for offensive use. The many animals Nagato summoned through the Animal Path also had copies of the Rinnegan and a number of these body piercings, suggesting that he may have controlled them in a similar manner. Obito later created his own Six Paths of Pain comprised entirely of reincarnated former jinchūriki, using only one receiver per body. The receivers also served to temporarily bind the chakra of the tailed beasts sealed inside the Demonic Statue to their former hosts, effectively making them jinchūriki once more.

The receivers are also capable of disrupting a living individual's chakra pathway system by injecting them with the user's chakra, hindering the target's movement and usage of techniques while causing a vision of the Rinnegan to appear in their mind. Due to being immobile, Nagato fired bladed receivers from his mechanical walker, which he claimed allowed him to control the victim due to their close proximity to him, though Naruto Uzumaki was able to resist his control through a combination of Sage Mode and Kurama's chakra. Similarly, those who possess the Rinnegan appear to be entirely immune to the receivers' effects.

Aside from receiving chakra, the rods can also be used to manifest chakra chains to bind anyone who touches them. Obito demonstrated a unique variation of the chakra receivers in the form of giant stakes, which he launched by forcefully ejecting them from another dimension with enough force to pierce the flesh of tailed beasts. After becoming the Ten-Tails' jinchūriki, Obito seemingly converted one of his Truth-Seeking Balls into six chakra receivers in order to activate the Six Red Yang Formation.

Other Media
In Naruto Shippūden: Shinobi Rumble, Pain has a technique called, in which he simply dashes at the opponent and stabs them with the blade variant, causing their controls to become temporarily reversed; an enhanced "Full Throttle" version is also available, called. As no specific name was given for these weapons in the manga, this may imply that they are officially known as.

Trivia

 * It was shown that the receivers inserted in the reincarnated jinchūriki moved in position when they entered Tailed Beast Mode. As seen with Rōshi, when he transformed into Son Gokū, the receiver moved from his chest up to the tailed beast's neck.