1 2 in. x 4 in. x 12 in. MoPAD set, 8pc/set, each set isolates 2 speakers Your loudspeakers are the most critical components you use to verify the quality of your work. No matter how good your mixer, mics, preamps, cables, and other pieces of gear that you've invested in, you're not truly hearing what your recordings sound like until you isolate your monitors from their environment. Auralex MoPAD Studio Monitor Isolation Pads provide sonic isolation between your monitors and whatever your monitors are resting on, INSTANTLY improving the accuracy of your entire monitoring system.MoPADs are designed so that they can be used to support virtually all sizes of bookshelf loudspeakers or recording monitors up to 100 lbs. each. MoPADs are affordable, easy to implement and very effective when decoupling your monitors from your room and all its contents. The patented design allows for 5 different positioning options. Using the included MoPAD Wedge Adjusters, you can adapt your loudspeakers to listening angles of -8?, -4?, 0?, +4? and +8?.