★★★★★ 4
Plastic key holder
Color: Black
A little light as it is plastic, but it does the job
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Reviewed in the United States on March 16, 2026
TGF11 SeriesAFM grating with trapezoid structures anisotropically etched in silicon The TGF calibration gratings feature one dimensional arrays of trapezoidal steps etched into a silicon substrate. The sidewalls of the structures are very smooth and planar surfaces with well defined orientation formed by the (111) crystallographic planes in monocrystalline silicon. The sidewalls and the horizontal top surfaces form an angle of 54. 74. SEM image of a TGF 11
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Your TGF11 Series orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.7 ★★★★★
Based on 367 reviews
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Product Reviews
★★★★★ 5
Great for keys
Color: Black
I haven’t misplaced my keys since I bought it. I do wish it were a little heavier in weight but it gets the job done
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Reviewed in the United States on May 15, 2026
★★★★★ 1
I do not recommend
Color: White
Very flimsy and cheap
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Reviewed in the United States on May 9, 2026
★★★★★ 3
Great for simple jewelry
Color: Black
I’ve had it for some time now, it’s okay. Not the material I was expecting. It’s sturdy. It came with a few scratches, I did get a used one though. I recommend this product for simple jewelry for kids, and get something better quality for your more expensive jewelry.
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Reviewed in the United States on May 29, 2026
★★★★★ 5
Good for the price
Color: Black, Color: Black
Very cute, well made, it is plastic but it’s durable. Better than the higher priced item I was considering.
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Reviewed in the United States on November 5, 2025
