Compatible with YU4, YU6, and other 4 to 7-inch speakers Durable steel construction with closed cell foam padding enhances nearfield listening by dampening vibration Top plates can be rotated up to 30 degrees to face the speakers your direction Each plate comes with a mounting hole and 1/4" - 20 screw for fastening the speaker in place Hollow support column lets you tuck in the cables for a clutter-free look Dimensions: Width: 17.8cm; height: 15.2cm; depth: 21.5cm