Articulating Tilt Swivel Arm LCD LED TV Wall Mount 27 32 36 37 40 42 46 50 55 60 Post-installation level adjustment allows the TV to perfectly level even after installed Make sure the wall installed TV bracket is firmness and tightness, such as concrete wall, solid wood wall, do not install in hollow and floppy walls. Adjustable tilting for perfect viewing angle Our screws might not be long enough for some TV models, Please check the PARTS image aboved and your TV's VESA before order. Multi-directional adjustment tilt, swivel and extend for perfect viewing angle