Plumber's Piece is a tool used by plumbers to join two pieces of PIPE together. It consists of a NUT, an ELL, and a PIPE. The NUT is a threaded fastener that is tightened to hold the ELL and PIPE in place. The ELL is a curved piece of metal that connects two sections of PIPE at an angle. The PIPE is a hollow tube that carries water or other liquids. Together, these three components form a Plumber's Piece, which is essential for plumbing work.