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BONTEC Desk Extender Tray, 11.8"x5.9" Table Mount Arm Wrist Rest Shelf, 90°Foldable Elbow Support, Clamp on Computer Arm Rest for Desk, Office & Home Use, Durable & Easy to Install, Black Carbon Fiber
BONTEC

BONTEC Desk Extender Tray

Bottom line: The BONTEC Desk Extender Tray ($25.49 on Amazon as of 2026-10-07): Adjustable double C-clamp fits desktops up to 4.4 inches thick; main trade-off: 11.8" x 5.9" surface is too small for a full-size keyboard.

$25.49

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Buy on Amazon — $25.49 Compare to similar accessories

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

*Price sourced from Amazon.com. Last updated 2026-10-07. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ Adjustable double C-clamp fits desktops up to 4.4 inches thick
  • ✓ Holds up to 33 lbs, enough for a keyboard or mouse, not just an arm
  • ✓ 90-degree foldable hinge folds flat to reclaim floor space
  • ✓ No-hole clamp mount, no drilling into your desk

Cons

  • ✗ 11.8" x 5.9" surface is too small for a full-size keyboard
  • ✗ Clamp needs a flat, overhang-free desk edge to grip
  • ✗ Requires tightening four screws, not a tool-free install
  • ✗ Fixed 90-degree fold, not a continuously variable tilt range

Manufacturer description

The BONTEC Desk Extender Tray clamps onto your existing desk to add an 11.8" x 5.9" surface exactly where your forearm needs it. If you type at a desk that's too shallow, your elbow ends up unsupported and the strain accumulates over an eight-hour day. This tray fixes that geometry without replacing your desk. The adjustable double C-clamp fits desktops up to 4.4 inches thick, and the no-hole mounting means you tighten four screws and you're done. Nothing is drilled, and the rounded outer edges keep the clamp from scratching the desk surface. Once mounted, the shelf holds up to 33 lbs, so it…

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SpecPicks Verdict

SpecPicks scored BONTEC Desk Extender Tray using a rating × review-volume × price-fit model applied to published specs and reviews across the accessories category. BONTEC's accessories lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for accessories of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

Will this fit my desk?

It clamps to desktops up to 4.4 inches thick using an adjustable double C-clamp, which covers most office and home desks. You need a flat, accessible edge for the clamp to close on.

How much weight can the tray hold?

BONTEC rates it for up to 33 lbs, so it handles a keyboard, a mouse and pad, or your resting forearm without flexing.

Do I have to drill holes in my desk?

No. It uses a non-hole clamp design; you tighten four screws to secure it. The rounded outer edges are designed to avoid scratching or marking the desk.

How big is the tray surface?

The shelf measures 11.8 inches by 5.9 inches. That is sized for elbow and forearm support or a mouse, not for a full-width keyboard.

Can I move it out of the way when I'm not using it?

Yes. The 90-degree foldable design lets you fold the tray down flat against the desk when you need the space, then flip it back up for use.

Key Features

  • COMPATIBLE WITH MOST DESKS - This desk extender tray is designed to be compatible with desks up to 4.4 inches thick, thanks to the adjustable double C-clamp. The rounded outer edges prevent scratches while ensuring a secure and stable fit for most desk types, offering versatile use in office or home settings
  • SUPPORTS UP TO 33LBS - The sturdy construction can support up to 33lbs, making it capable of handling heavier items. Whether you're using it for an arm rest, keyboard tray, or mouse pad, the solid build ensures reliable performance for your desk organization
  • 90° ADJUSTABLE ANGLE FOR CUSTOM COMFORT - The 90° foldable design allows for easy storage and adjustment to your preferred ergonomic angle. Adjust the tray to relieve stress on your arms and elbows, optimizing your comfort whether youre typing or working long hours
  • SLEEK AND COMPACT DESIGN - The slim profile of this desk extender ensures it takes up minimal space while offering maximum functionality. Its easy-to-install clamp design allows you to enjoy a full workspace with an ergonomic arm rest and additional surface area
  • EASY INSTALLATION WITH NON-DAMAGING CLAMP - Quick and simple to install with a non-hole design that doesn’t damage your desk. All you need is to tighten the four screws, allowing for fast setup and secure use without leaving marks or damage on your desk. Dedicated customer support is available for any installation or usage concerns

Full Specifications

BrandBONTEC
ColorBlack Carbon Fiber
ShapeRectangular
PatternSolid
MaterialMDF, Metal
Style NameExtender Tray
Model NumberEH02
Material TypeMDF, Metal
Item Type NameDesk Extender Tray
Number of Items1
Special FeatureErgonomic
Maximum Weight Recommendation33 Pounds
Full listing titleBONTEC Desk Extender Tray, 11.8"x5.9" Table Mount Arm Wrist Rest Shelf, 90°Foldable Elbow Support, Clamp on Computer Arm Rest for Desk, Office & Home Use, Durable & Easy to Install, Black Carbon Fiber

Ready to buy?

BONTEC Desk Extender Tray, 11.8"x5.9" Table Mount Arm Wrist Rest Shelf, 90°Foldable Elbow Support, Clamp on Computer Arm Rest for Desk, Office & Home Use, Durable & Easy to Install, Black Carbon Fiber is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $25.49

*Price sourced from Amazon.com. Last updated 2026-10-07. Price and availability subject to change.

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BONTEC Desk Extender Tray, 11.8"x5.9" Table Mount Arm Wrist Rest Shelf, 90°Foldable Elbow Support, Clamp on Computer Arm Rest for Desk, Office & Home Use, Durable & Easy to Install, Black Carbon Fiber
$25.49
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