The Sound Town STWSD-048B is a 2-pack wall mount speaker brackets that can safely hang speakers on flat wall surface. Each speaker bracket features a 180-degree swivel and 0-20-degree angle adjustment capability and allows you to place the speakers with the angle you want for optimal coverage. Each bracket comes with heavy-duty steel construction and up to 80lbs maximum weight capacity and provides the flexibility you need to make the most of your system. FEATURES 2-pack wall mount speaker brackets Securely hangs speakers on flat wall surfaces 180-degree swivel and 0-20-degree angle adjustment Each wall mount speaker stand supports up to 80 lbs Heavy-duty steel construction The bracket hole diameter is 9.5mm and it is suggested to use M8 screws,screws are not included. SUPPORT