1: Design for Era100: finish matched to for Era 100 for streamlined aesthetic. 2. Strong and : The holder is made of Steel, -coated finished.Reduce reflections and minimize vibration. 3: Easy To Install: Just need few minutes to install it well according to the hardware kit. 4: The speaker can swivel up to 45° to either left or right to the perfect listening angle in all locations. Colour:Black Material:Steel Package Contents: 4 x brackets, 2set x screw mounting accessories (the color of the screw mounting accessories is random,don't accept the specified color) Different batches may have different appearances, which not affect the use; different lighting or displays may cause color differences in the actual product Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.