I use these for 40" and 42" LCDs for reliable/quick monitoring during public speaking. The only issue is that the tilt lock bolt/knob needs to be updated to hold heavier displays at the correct angle. I currently have four in use. I made a few updates that others might be interested in. I replaced the tilt lock knob with these (adjustable metal M6 diameter female clamp knob, 5pcs, black): https://www.amazon.com/gp/product/B015K4AA14 /ref=oh_aui_search_detailpage?ie=UTF8&psc=1They are made of metal and offer a much firmer fixation when tilted, and the angle of the handle is adjustable. I also replaced the adjuster screws/locknuts with these (Sportube Wire Case Pin Pack): https://www.amazon.com/gp/product/B000F65RK2/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 They fit perfectly and they are black , so that they disappear. Much easier to work with than a few bolts and locknuts. Now no tools are required to adjust the height. Replacement square base hole plugs (RC5030MBBK1 Metric Square Tube Plugs 30 x 50mm OD - MOCAP (Qty 20)) can be purchased from Revain here: https://www. amazon.com/gp/product/B00SW0UDOI/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1
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