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- USA
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Ships within 48 hours · Estimated delivery Aug 7 - Aug 12
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For Your Every Summer RSVP, with Code: SUMMER15
Description
DUOYI DY28 Car Double Hole Spark Plug Tester, US Plug, DUOYI US Plug1. It has two testing holes, you can test two spark plugs meanwhile and and if you suspect any spark plug works improperly you could compare and test to make accurate judgment. 2. Adjustable double hole car spark plug tester detector Ignition Plug Analyzer Diagnostic Tool 3. Usage: Test spark plug performance and ignition strength 4. Application Range: 12V Gasoline vehicles car spark plugs 5. Car Spark Plug Tester User Manual: (1). Place the Spark
1. It has two testing holes, you can test two spark plugs meanwhile and and if you suspect any spark plug works improperly you could compare and test to make accurate judgment.2. Adjustable double hole car spark plug tester detector Ignition Plug Analyzer Diagnostic Tool
3. Usage: Test spark plug performance and ignition strength
4. Application Range: 12V Gasoline vehicles car spark plugs
5. Car Spark Plug Tester User Manual:
(1). Place the Spark Plug into tester hole 1 or 2; If you want to compare the new spark plug and old one, place new spark plug into hole 1 and the old on into hole 2
(2).Close up the protective cover , then plug in the adaptor to the side socket , connect the tester to power supply.
(3).Turn the key switch clockwise to turn on tester, indicator will light up green.
(4). Continue to turn the switch clockwise, you can adjust the working frequency between 1000rpm to 6000rpm/min, The higher the frequency is set, the stronger the spark more.
Specification:
| Package Weight |
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 5
Very cute for the price
Color: B-Metal Antique Greenish
Much nicer than expected for the price. It looks cute on my bureau.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2026
★★★★★ 5
Nice jewelry tree
Color: B-Metal silver
Perfect for all my jewelry rings bracelets necklaces and my watch looks cute and keeps my dresser organized so my jewelry isn’t all over the place very easy to use and fits perfectly in the spot on my nightstand
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Reviewed in the United States on November 23, 2025
★★★★★ 4
A Unique Jewelry Stand
Color: B-Metal Antique Greenish, Color: B-Metal Antique Greenish
When I received the item, it was in bubble wrap and taped. It's like a spider's nest, so the item is safe during delivery. It is attached to the tree by a screw. The golden appearance and the patterns cut within the work look good. My only dislike about the item is that it accidentally poked my sister's thumb because some of the ends of the tree branches are not smooth out. Stability is good. However, I do think the screw loosens over time. It's heavy enough to keep itself in place. For what you're getting, it is decent for the price.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Lovely Quality Product...
Color: B-Metal Bronze
This was a nice gift for my daughter who has limited space... and it is a pretty addition to her dresser... She loved it!
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Reviewed in the United States on February 9, 2026
★★★★★ 5
Great organizer for "normal length" chains
Color: B-Metal Black
This little tree has saved all my random jewelry from its fate of being a tangled mess in a zipper bag, or in my nightstand drawer, or the bottom of my purse...you get it.
If you have a lot of long (greater than 26 inches or so) chains, you may wish to opt for something taller. But for my purposes, it's just grand. Even nicer-looking than the picture also.
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Reviewed in the United States on May 6, 2025
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