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Ships within 48 hours · Estimated delivery Aug 12 - Aug 17
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Description
DUOYI DY23B Car Brake Fluid Detection Pen Moisture Tester, DY23B1. Brake pressure was transmitted by brake fluid, the pressure transmission will out of function once brake fluid including too much water. In order to safe driving, we must test water ratio scale in brake fluid regularly. The brake fluid tester help us do current maintenance, make sure we drive in safety condition. 2. HD backlight dual display, support backlight display glare and easy reading day and night. 3. Operation Manual: (1). Install one
1. Brake pressure was transmitted by brake fluid, the pressure transmission will out of function once brake fluid including too much water. In order to safe-driving, we must test water ratio scale in brake fluid regularly. The brake fluid tester help us do current maintenance, make sure we drive in safety condition.2. HD backlight dual display, support backlight display glare and easy reading day and night.
3. Operation Manual:
(1). Install one 9V(6F22) battery at the back of tester.(not included)
(2). After inserting the battery, press POWER button to turn on the tester, all LEDs lights turn on with buzzer sounding, which indicates the product self-test is successful.
(3). Press SELECT button, it will locate DOT3 model automatically.
(4). Each time you push the SELECT button, it will recycle from DOT3 to DOT4 to DOT5.1 with the indicator LEDs.
(5). Immerse the probe into brake fluid and you will get different colors of LED lights, they indicate:
Green Light: indicates the brake fluid water content is below 1%
The First Yellow Light: indicates the brake fluid water content is approximately 1.5%
The Second Yellow Light: indicates the brake fluid water content is approximately 2.5%
The First Red Light: indicates the brake fluid water content is approximately 3%
The Second Red Light: indicates the brake fluid water content is more than 4%
(6). Press POWER button to turn off the tester.
4. Note:
(1). After use, please clean the probe and avoid any retention of stains that might affect the test.
(2). If in use for a long time, best to remove all batteries and store in a dry place at normal room temperature.
5. Package include:
Brake fluid tester x 1
User manual x 1
Specification:
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Shipping Notes
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Exchange/Return Notes
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4.4 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 5
The best ever paper towels
Package Size Name: Family Triple Roll, Size: 141 Sheets (Pack of 12)
These are hands down the best paper towels I have ever used. If you haven’t tried them yet, you absolutely should. They truly feel more like a soft cloth than a paper towel, and the absorbency is incredible. They’re durable, super soft, and handle messes so well without falling apart. I am officially a buyer for life and won’t be going back to anything else!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2026
★★★★★ 5
These are the best paper towel ever!
Package Size Name: Family Triple Roll, Size: 141 Sheets (Pack of 12)
The reason I say these are the best paper towels is because they are more like a cloth than actual paper. If you're doing something larger like cleaning the kitchen sinks you can usually get by with just one. You can wet it down, ring it out and continue working. When it's time to dry, these soak up so much more liquid than any other towel... It's crazy! They are a bit on the expensive side, but you'll use so fewer towels that it makes up the difference.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
★★★★★ 5
Quality
Package Size Name: Triple, Size: 141 Sheets (Pack of 16)
Quality, affordable, durable
Will buy over bounty everytime!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
★★★★★ 5
Strong, mighty and reusable.
Package Size Name: Triple, Size: 141 Sheets (Pack of 2)
I love these specifically for our RV because they work great to take my makeup off at the end of day as well. These really are different and more durable then most others on the market. Can even be rinsed and reused before discarded if need be.
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Reviewed in the United States on April 9, 2026
★★★★★ 5
Close to a cloth
Package Size Name: Triple, Size: 141 Sheets (Pack of 16)
Hi All, These are simply terrific paper towels that are close to grabbing a cloth. They come in triple size rolls which we
find helpful. I get the ones that can tear at a half size sheet, and find the roll last longer when you don't have to use
a full sheet for everything. For paper, these are softer than most, and don't have that sandpaper feeling like so many do. I think you'll like them. Prices and sizes change depending on the stock available so watch for the right price for the right rolls you prefer.
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Reviewed in the United States on March 27, 2026