I don't write reviews much, but this device is so well designed and so met my needs that I want to share this with everyone. The installation instructions while sparse, were very clear. It took about 30 minutes to install and went together without a hitch. It swivels left to right, tilts, and raises vertically above/below the level of the track. Has a single handle easy adjustment, and all of the mechanics function very smoothly. It also appears to be about half the price of other devices but is very well built. Only minor observation is what some others have offered, it would be nice if the swivel out mouse pad had another mounting hole closer to the front in addition to the rear of the unit. Well done Mount-It!