Abstract: A spray including a hollow main shaft, a main shaft rotation portion fitted to be rotatable around the main shaft, and an external ring fitted on the rotation portion. The external ring pressing the rotation portion onto the main shaft so that fluid cannot enter the interface between the rotation portion and the main shaft. The spray further including a three- or four-way joint connected to the rotation portion, an angle joint connected to the three- or four-way joint, and a nozzle joint connected to the three- or four-way joint or the angle joint. The nozzle joint having a nozzle end and a concave bearing portion end, where the bearing portion is closely fitted on a spherical joint portion of the angle joint thus allowing the connection angle to be freely changed. The rotation portion is rotated by the force of the fluid being sprayed out of the nozzle joint.