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Basis: HUANUO's instruction manual (v9, model HNDS6), the Amazon listing, and published desk-mount guidance. WebReviewStar has not independently tested this unit.
Review summary
The short answer
Buy it if you have a solid wooden desk without a back panel or cross beam, and two screens between 4.4 and 19.8 lb. Skip it if your desk is glass, or has a bar running under the back edge — neither the clamp nor the grommet will fit, and no amount of adjustment fixes that.
Buy it if
- Your desk is solid wood, 15–90 mm (0.59"–3.54") thick, with clear space underneath at the back edge
- Each screen is 13–32 inches and between 4.4 and 19.8 lb
- You want the screens off the desk and at eye height without a fixed stand
- You are willing to drill if you choose the grommet route
Skip it if
- The desk is glass or plastic — the manual rules both out
- There is a cross beam, drawer box or back panel under the rear edge
- Your monitor has no VESA holes, or the weight sits outside 4.4–19.8 lb
- You want to route cables through the desk itself rather than along the arms
What it actually is
A gas-spring dual monitor arm that clamps to the back of a desk. Two arms on a shared base plate, each carrying one VESA screen, each independently adjustable in height, tilt, swivel and rotation.
The model number matters here. The manual is headed HNDS6, version 9, and it covers the mounting system in enough detail to answer most of the questions the product page leaves vague.
The two conditions that decide everything
Most monitor arms fail for one of two reasons: the desk is wrong, or the monitor is wrong. This one is unusually explicit about both, and that clarity is worth more than any feature.
The monitor has to satisfy three things at once — 13 to 32 inches, 4.4 to 19.8 lb (2–9 kg), and VESA holes at 75×75 mm or 100×100 mm (3"×3" or 4"×4").
The desk has to satisfy three more — wooden, 15 to 90 mm (0.59"–3.54") thick, and clear underneath at the back edge with no cross beam or panel.
That second list is where people get caught. A desk with a rear stiffener bar, a cable tray, or a drawer box behind the knee space will not accept the clamp, and the grommet route needs a hole through the surface anyway. Neither is a defect; it is the nature of a clamp-on arm.
The weight range is the honest specification. A 32-inch screen can weigh 9 lb or 20 lb depending on the panel and the stand you remove, so the size limit is a proxy and the weight limit is the real one.
What works
- Gas spring holds height without a knob to re-tighten every week
- Both mounting routes — dual C-clamp and grommet — are in the box
- Tilt, swivel and 360° rotation on each arm, so portrait is available
- The manual is candid about limits, and the limits are the useful part
What doesn't
- Two conditions stack before it fits at all: desk type and monitor weight
- Grommet route needs an 11–22 mm (7/16"–7/8") hole drilled, and neither tool is supplied
- Height may need assistance to set on a heavy screen
- Amazon rating and price are Amazon's numbers; this review does not repeat them
What the manual tells you that the listing does not
The supplied manual is a 68-page, six-language document with no text layer — it is drawn, not typeset — so the detail is in the diagrams. Reading it turns up several things worth knowing before the box arrives.
Height is set by a gas spring, adjusted with an Allen key once. The manuals' step 4 warns that the arm must be held horizontal while adjusting, and that you may need a second person. The adjustment is a bolt under the upper arm: turn it to increase or decrease tension until the screen stays where you put it unaided.
Over-tightening is called out twice. One note warns that the arm should not be over-tightened as it affects rotation. That is the most common cause of a joint that feels stiff or will not move freely.
The grommet method requires a hole you drill yourself. 11–22 mm (7/16"–7/8") diameter, positioned at least 50 mm (2") from the desk edge. The manual states plainly that the drill and the bit are not included.
Nothing is adjusted before the monitor is on. A full-page warning, in every language, says the tension must not be set without the screen attached and confirmed secure — the arm is under spring load.
It will not take a 34-inch ultrawide
Worth stating because the numbers are close enough to be misleading.
This arm is rated 13 to 32 inches per screen. The Samsung Odyssey G5 reviewed here is 34 inches. Its weight may well fall inside the arm's 4.4–19.8 lb (2–9 kg) limit, but 34 is outside the documented screen range, and an arm carrying a screen larger than its specification is a risk you are taking with your own hardware.
Samsung's own mounting figure compounds it: that monitor takes a 75 × 75 mm VESA pattern, not the 100 × 100 that a heavy ultrawide usually implies. The arm's plate covers both, so the pattern is not the obstacle — the size rating is.
Who it is for
The obvious cases are the ones the listing leads with: two documents side by side, a trading desk, a game on one screen and a chat window on the other, a timeline on one and a preview on the other.
The honest framing is narrower. This is the right product if you want two screens at your own eye height, with the desk surface emptied underneath, on a desk solid enough to take a clamp. It is the wrong product if any of the desk conditions fail, and no competing arm fixes that either.
What it is not
It does not make a cheap desk sturdier. A clamped gas arm applies leverage to the rear edge of whatever it grips; a wobbling desk will still wobble, and now it will wobble with two screens on it.
It does not manage cables for you beyond what you route along the arms. The manual shows a cable cover on the lower arm that must face downward — worth noting, because fitting it the wrong way round is easy and the arm then looks broken when it is not.
And it does not tell you whether to buy it. That depends on two numbers you have and the listing does not: the underside of your desk, and the weight of your monitors.
Questions
Will it hold two 32-inch monitors?
Size is not the constraint — weight is. Each arm takes 4.4–19.8 lb (2–9 kg), and a 32-inch screen can land either side of that. Weigh your monitor before buying.
Can I use it on a glass desk?
No. The manual states plastic or glass desks cannot be used, and both mounting methods rely on compressing a clamped surface.
Do I have to drill?
Only for the grommet method. The C-clamp needs no drilling, but requires 15–90 mm (0.59"–3.54") of clear desk thickness and no cross beam underneath.
What is in the box?
Two arms, two C-clamp uprights, a grommet base plate, a through-bolt and nut, two Allen keys (3 mm / 1/8" and 5 mm / 3/16"), plus M4 screws and spacers for VESA mounting. No drill and no drill bit.
Sources
The bottom line
If it suits how you actually use your network, this is the one to buy.
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