Brake fluid tester pen, BAHCO

Used to check brake fluid quality by measuring its moisture content. Suitable for brake fluids DOT3, DOT4 and DOT5.1. Quick reading (1s) of moisture concentration: 2%: Medium; >3%: Needs to be changed. Automatic shut-off function after 20 s without use. Powered by an AAA 1.5V battery supplied with the tester. Retail packed.

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