"This is my most robust 'arm' for positioning heavier items or for persons that have a heavy touch, or you need to reach a longer distance (greater than 22") and need an Extension. Most of the time, people get this for their iPad/tablet, but it can also hold keyboards like my 'BIG Blue'-Tooth keyboard(TM), other tablets, even books." RJ :-) The large knob at the 'elbow' tightens the 3 'arm' joints. The Super-Clamp attaches to just about anything. As with both of those, this product from this page comes with an Adjustable Tablet Holder of your choice. Choose Standard for smaller tablets (Kindle, iPad Mini, etc.) or regular size iPads NOT in a protective case (although I think it's crazy not to protect your valuable investment). Please consider one of my Ultimate II cases! Choose Tall for regular or larger tablets in protective cases. Choose Tall & Thick for VERY thick foam cases. Extensions are available in 3" lengths (larger lengths below comprise appropriate number of 3" lengths, + a 1" 'header').
