Designed For: This mount is compatible with Bose 161 speaker, 151 se environmental speakers and Bose model 100 speakers, also can fit for Bose 34103 SE elegant outdoor speakers 2 Types of length, 1 Design: Via install or remove the extension pole can achieve to adjust the mount's length type. The short type can used as a wall mount, the long type can used as a ceiling mount. As the speaker can install to indoor or outdoor, this bracket also can install to indoor or outdoor Tilt & Swivel Adjustable: Through loosened and tightened the side screw to achieve Tilt & Swivel 180°adjustable (90° up and 90° down) & (90° right and 90° left). After the side screw tightened,the mount's direction is fixed and cant adjust Overall Appearance More Beautiful: When you install the mount to the wall or ceiling the wall screws are hidden under a small cover. This design makes the overall appearance looks more beautiful than others Packed in high quality blister: All of the parts of th