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Ships within 48 hours · Estimated delivery Jul 19 - Jul 24
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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:
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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
4.7 ★★★★★
Based on 6 reviews
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Product Reviews
★★★★★ 5
Love this!
Scent: Pineapple, Size: 0.35 Fl Oz (Pack of 1)
I am obsessed with this lip product! It smells amazing and keeps my lips very moisturized. I have already repurchased it twice! Worth the price!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
★★★★★ 5
Really impressed!
Scent: Island Coconut, Size: 0.35 Fl Oz (Pack of 1)
I use this brand as my daily body sunscreen and love the smell, so I was tempted to buy this lip balm. I'm so glad I did!
It smells great, and my absolute favorite thing about it is that it seems to last all day. I wear it with a light lip liner and my lips stay soft and moisturized after a long work day, 2 meals, etc.
It does have a bad taste, but not nearly as bad as other brands I've tried. If you do the lip stick trick with your finger its unlikely to get in your mouth, unless you bite your lips. So its been a great protection against lip biting as well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 9, 2025
★★★★★ 5
Great product
Scent: Island Coconut, Size: 0.35 Ounce (Pack of 2)
This goes on very smooth! Not like Aquaphor or chapstick but somewhere in between!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 6, 2026
★★★★★ 3
Funny after taste
Scent: Island Coconut, Size: 0.35 Fl Oz (Pack of 1)
Usually love Hawaiian Tropic products but this lip balm has a weird taste. The spf is good, if you don't mind the taste.
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Reviewed in the United States on May 15, 2026
★★★★★ 5
Clear and soothing
Scent: Island Coconut, Size: 0.35 Fl Oz (Pack of 1)
Very smooth and smells wonderful. Good lip moisturizer. goes on clear
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 10, 2026
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