This monitor arm is simple but moderately adjustable and strong enough to hold approximately 10lbs. The arm itself is 100 mm long but with all the components attached it reaches 230 mm at its farthest. The VESA mount modeled here is 75 mm X 75 mm. A list of hardware may be found below:
M10 - 1.50 X 50 Hex Cap Bolts and accompanying nuts
M4 - .70 X 16 Button Head Bolts (VESA Adapter)
Fluted Knobs - 5/16 - 18 X 1 - 3/4 (For Clamp)
The clamp end can accomodate a 21.5 mm square tube, but more adapters will be coming soon.