Stock Wedges is ruggedly built, exceptional sound. It has horns with high compression piezo drivers, durable black carpet cover. It provides heavy duty plastic protective corners and sized for easy portability. It is the active twin of the inclined plane. It remains stationary. It consists of a pair of inclined planes set face-to-face, that can sustain relative sliding or rolling motion. It is capable of building up enormous force in a direction perpendicular to that of the moving wedge. Force multiplication varies inversely with the size of the wedge angle. A sharp wedge yields a large force. It is separating, holding and stopping device with countless mechanical applications.