This item is provided by Crutchfield.com and includes free phone technical support for the life of the product. Details on how to take advantage of this service will be included with your package. Should you have any issues locating information on how to contact Crutchfield Technical Support, please contact this website's Customer Service department. The MASM lets you mount select Monitor audio speakers on the ceiling or wall. The included ball joint is compatible with Bronze 1 , MASS Satellite, Radius 45 and Radius 90 speakers. What's in the Box: 1. Wall-plate 2. Fixing-dial 3. Ceiling arm 4. Wall arm 5. Locking nut 6. Installation Instructions