The R-Go Caparo 4 D2 Dual Monitor Arm from R-Go Tools is an articulating (gas-cylinder) desk-clamp arm for two monitors. It has a dual hinged arms for horizontal extension from 8" to 23" (20 - 59 cm) with a height range of 6.3" to 25.2" (16 - 64 cm), a tilt range of 40°, rotation of 360°, and swivel range of 180°. The monitors mount to the arms using a 75x75 mm and 100x100 mm VESA plate. The Caparo 4 D2 can handle monitor weights from 6.6 to 19.8 lbs (3 - 9 kg).

The Caparo 4 D2 Dual Monitor Arm uses three "Smart" technologies in its design. The Smart Lock feature allows attachment of the monitor to the arm with one click. The Smart Connect feature connects all modules together without tools and in an intuitive way. The Smart Stop feature secures the rotation of the arm in a certain direction with the rotation stop. In addition, the arm is certified to be 100% circular*.

Note: "100% circular" means modules can be re-used with a life-time take back guarantee, the product is certified 100% recyclable, 75% of the aluminum is recyled raw material, materials are easily separable using smart-fits, and product boxing is 100% carton packaging material. Due to the cost of returning these to the manufacturer it may be more practical to direct them to a local recycler.