ZLLJYBLG GL21A Brake Fluid Tester with 360° Flexible Metal Probe by ZLLJYBLG - Used condition

ZLLJYBLG GL21A Brake Fluid Tester with 360° Flexible Metal Probe — Open-Box, 19% Off

Name: ZLLJYBLG GL21A Brake Fluid Tester with 360° Flexible Metal Probe
Brand: ZLLJYBLG
SKU: awhd-us-b0h7s3kmjq
Price: 13.77 USD
Availability: InStock

Brand: ZLLJYBLG

Condition: Used

$13⁷⁷

$16⁹⁹

-19% Save $3²²

Updated: 3 days ago

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Description

COMPATIBLE WITH DOT3, DOT4 & DOT5.1: Accurately measures moisture content in all common brake fluid types, making it a versatile tool for professional auto shops and everyday car owners alike.

HD DUAL-COLOR BACKLIT DISPLAY: Large-digit screen turns green (0%–2% moisture, safe to drive) or red (>2% moisture, replace fluid immediately) for instant, at-a-glance brake fluid condition assessment.

HIGH-PRECISION FLEXIBLE METAL PROBE: The 360° bendable gooseneck metal probe features a high-sensitivity sensor with fast response time, allowing easy access to narrow brake fluid reservoirs for stable, accurate readings.

DUAL SOUND & LIGHT ALARM: Built-in audible buzzer and red light alert notify you immediately when brake fluid moisture exceeds safe levels, helping prevent brake failure and ensuring driving safety.

COMPLETE READY-TO-USE KIT: Includes the GL21A brake fluid tester, AAA batteries, screwdriver, and user manual — everything needed to get started right out of the box for quick and convenient brake maintenance.

Keep your vehicle's braking system in peak condition with the GL21A Brake Fluid Tester — the professional-grade diagnostic tool trusted by auto repair technicians and everyday car owners alike. Designed for fast, accurate moisture detection in DOT3, DOT4, and DOT5.1 brake fluids, this tester delivers reliable results in seconds, helping you make informed maintenance decisions before safety is compromised. The HD dual-color backlit display makes readings effortless to interpret: a green screen indicates moisture levels between 0%–2% (safe to drive), while a red screen with dual sound and light alerts warns you when moisture exceeds 2% and fluid replacement is immediately needed. The high-precision metal probe features a 360° flexible gooseneck hose that bends to reach even the narrowest brake fluid reservoirs, ensuring accurate and stable sensing every time. Large on-screen digits remain clearly visible in any lighting condition, and the convenient HOLD function locks your reading for easy reference. The complete kit includes AAA batteries, a screwdriver, and a user manual — everything you need to get started right away. A must-have tool for any garage or glove compartment.

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Product Details

SKU:: awhd-us-b0h7s3kmjq
Model:: Gl21a
Country:: US
ASIN:: B0H7S3KMJQ

Shopping Smarter

Common questions about buying open-box and refurbished.

Why buy refurbished or open-box?

Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $3 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.

What's the difference between open-box and refurbished?

Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.

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