Smooth operating arm allows an easy extension of flat panels. Perfect for "around the corner" and under the cabinet applications. Fits most 13-27" LCD panels. You have to love technology and the ever changing designs of flat panel manufacturers. The SM-SWIVEL-S mounting head has been modified to accommodate flat panel mounts whose VESA pattern is 75 X 75, 100 X 100 and now 200 X 100! Just mount the wall plate into your stud and slide in the mount for a quick, secure install. Loosen or tighten pivot rotations to accommodate different flat panel weights and personal preferences. Use the integrated level in the wall plate for a quick, easy reference.