These are a pair of universal speaker mounts that can be used on either the wall or ceiling. They are designed for surround sound speakers weighing up to 9 lbs. and feature a swivel mount, allowing you to adjust the direction of the speakers for optimal sound projection. The package includes 2 units, making it suitable for setting up a pair of speakers in a home audio setup. These mounts are versatile and can be used with various speaker brands, offering flexibility in installation options for your audio system.