The Mount is made from very hard-wearing precision engineered high grade steel. The product is supplied with fixings for both wood/studwork and brick/masonry so can you place it almost anywhere to ensure you get the best listening experience from your Sonos Era 300 speaker. We have made it very easy for you to install and use the wall bracket. Installation requires a pencil, level, and Phillips-head screwdriver.(Not included). Colour:Black Material:Steel Package Contents: 1 x bracket 1 x installation screw package (screw color is random,don't accept the specified color) 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.