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  1. Brake Fluid Tester Pen with 5 LED Indicators for DOT3/4/5, Easy & Accurate

  2. Black Brake Fluid Tester Pen, 5 Led Indicators, Dot3/Dot4/Dot5,

  3. HT662 Handheld Brake Fluid Tester Pen with LED Indicator, Number Range 0-4%

  4. US PRO Tools Brake Fluid Tester Pen DOT 3 4 5 LED Display Test for Water 5394

    Green, Yellow, Yellow, Red & Red - At least 4% water present in brake fluid. Urgent change of brake fluid is necessary. Suitable for DOT 3, 4, 5 (not suitable for silicone based DOT 5.1). Green & Yellow - Less than 1% water present in brake fluid.

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  5. Diamond Tester High Accuracy Diamond Tester Pen Jewelry Diamond Tester Professional Diamond Selector Diamond Tester Kit

    Diamond Tester High Accuracy Diamond Tester Pen Jewelry Diamond Tester Professional Diamond Selector Diamond Tester Kit

    Aliexpress UK

  6. Digital Brake Fluid Tester Pen with 5 LED Lights for DOT3/4/5, Portable Display

  7. Portable Brake Fluid Tester Pen, ABS, 152.5cm, 5 LED Indicators

  8. Brake Fluid Tester pen LED 5.1 Accurate Brake Fluid Tools Tester for DOT3/DOT4/D

    BF100/BF200 support DOT3, DOT4, DOT5.1. Function 2: Support DOT3, DOT4 and DOT5.1 Types. Why does Brake Fluid Tester is essential tool?. Why Choose BF100/BF200 Brake Fluid Tester ?. The Function of BF100/BF200 Brake Fluid Tester .

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  9. HT662 Brake Fluid Tester Pen with LED Indicator, 0-4% Detection Range

  10. ANENG A3009 NCV Multimeter Pen Intelligent Voice Broadcast Digital Tester 6000 Counts DC AC Voltage Sensor Pen Tester Meter Tool

    ANENG A3009 NCV Multimeter Pen Intelligent Voice Broadcast Digital Tester 6000 Counts DC AC Voltage Sensor Pen Tester Meter Tool

    Aliexpress UK

  11. Brake Fluid Tester Pen, ABS, Water Content Indicator for DOT4 Vehicles

  12. Car Auto Digital Brake Fluid Liquid Tester Pen Car Oil Testing Detector Tool

    Tester Instructions Tester Features A brake fluid tester. 1, the green LED lights = water content in the brake fluid H2O <1.5%, brake fluid qualified. 3, the red LED lights = water content in the brake fluid H2O> 3%, can not continue to use the brake fluid needs to be replaced.

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  13. 100-500V Electrical Tester Pen Voltage Indicator Test Pencil Tester Screwdriver Neon Bulb Non-contact Insulation Test Pen

    100-500V Electrical Tester Pen Voltage Indicator Test Pencil Tester Screwdriver Neon Bulb Non-contact Insulation Test Pen

    Aliexpress UK

  14. Brake Fluid Tester Universal Auto Pen Digital Testing Tool Oil Quality Check D

    Type: Brake fluid tester. 1x Brake Fluid Tester (Color Randomly sent). Designed for checking the quality of brake fluide quality simply. Automatically power off. Material: Light emitting diode. Item Color: Black.

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  15. Brake Fluid Tester Pen for DOT3 DOT4 DOT5.1 ENV6 ENV4 with 5 LEDs

  16. ANENG Word/cross Screwdrivers Neon Bulb Indicator Meter Electric Pen Insulated Electrician Highlight Pocket Tester Pen Tester

    ANENG Word/cross Screwdrivers Neon Bulb Indicator Meter Electric Pen Insulated Electrician Highlight Pocket Tester Pen Tester

    Aliexpress UK

  17. Brake Fluid Tester Pen for DOT3, DOT4, DOT5 with 5 LED Indicators, 55x25x19mm

  18. Brake Fluid Tester Pen 5 LED Mini Indicator Car RepairTools Diagnostic Testing

    Brake Fluid Tester Pen 5 LED Mini Indicator for Car Repairs Tools Automotive Diagnostic Testing Tool. Insert the tester into reservoir for a second, then the results will be indicated correctly by LEDs.

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  19. 24-250V Induction Test Pen Highlight Color Light Electrician Screwdriver NCV DC Detection Tester Pocket Tester Pen Testing Tools

    24-250V Induction Test Pen Highlight Color Light Electrician Screwdriver NCV DC Detection Tester Pocket Tester Pen Testing Tools

    Aliexpress UK

  20. Black Portable Brake Fluid Tester Pen, 5 Led Indicators, 15Cm,

  21. Brake Fluid Liquid Oil Tester Pen 5 LED Indicator Car Testing Diagnostic Tool UK

    Brake Fluid Tester Pen 5 LED Mini Indicator for Car Repairs Tools Automotive Diagnostic Testing Tool. Insert the tester into reservoir for a second, then the results will be indicated correctly by LEDs.

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  22. 2025 Professional Voltage Tester Pen Circuit Tester Electrical Screwdriver Voltmeter Power Detector Pen For Test Electricity

    2025 Professional Voltage Tester Pen Circuit Tester Electrical Screwdriver Voltmeter Power Detector Pen For Test Electricity

    Aliexpress UK

  23. Brake Oil Fluid Tester LED Moisture Liquid Tool Car Vehicle Test Indicator Pen

    The humidity is clearly indicated by the light-emitting diodes. Unscrew the lid for the brake fluid reservoir, and take off the cap for the brake fluid tester. Turn on the brake fluid tester by pressing the button.

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  24. Black High Precision Brake Fluid Tester Pen, 5 Led Indicators, 55X25x19mm,

  25. ANENG B15 Induction Tester Pen AC 24-250V Voltage Detection Pen One-word Electrician Screwdriver Tester Wire Breakpoint Finder

    ANENG B15 Induction Tester Pen AC 24-250V Voltage Detection Pen One-word Electrician Screwdriver Tester Wire Breakpoint Finder

    Aliexpress UK

  26. Brake Fluid Tester pen LED for DOT3/DOT4/DOT5.1 Accurate Brake Fluid Tool Tester

    BF100/BF200 support DOT3, DOT4, DOT5.1. Function 2: Support DOT3, DOT4 and DOT5.1 Types. Why does Brake Fluid Tester is essential tool?. Why Choose BF100/BF200 Brake Fluid Tester ?. The Function of BF100/BF200 Brake Fluid Tester .

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  27. HABOTEST HT663 Brake Fluid Tester Pen for Auto DOT3/DOT4/DOT5.1 Check

  28. STONEGO 1PC Voltage Tester Pen 70V-250V Induction Power Detector Pen Screwdriver Indicator Circuit Tester

    STONEGO 1PC Voltage Tester Pen 70V-250V Induction Power Detector Pen Screwdriver Indicator Circuit Tester

    Aliexpress UK

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