This is a technique that was made by Aoi Uchiha, and is one of his strongest A-Rank technique. By concentrating chakra into his hand(s) and holding his hand with his fingers together and hand open, chakra starts to cover his hand. As it covers his hand, it has a drilling motion to it, that is what makes this technique so deadly. On impact with an object, the hand goes through the object smoothly, then when inside, it drills everything and pushes and sucks stuff out the way. Then when it exits, Aoi releases some of the chakra to make it push what ever is n front of it out. The aftermath is very devastating.
For example, in a human, when the Doriru goes it, it pierces because of the drilling and how the hand is held, then as it goes through, the drilling motion of the chakra pulls stuff into the motion of the chakra, then pushes it into random spots in the body. Then when it exits, Aoi makes the chakra push into the exit point causing major damage. In the aftermath, there is a small whole in the front of the body, then in the inside, there is a mass of torn apart tissue, organs, and bone. Then at the exit point, there is a big whole, bigger than the entry point.