Item No.: B15AF100
.It can indicate whether the brake fluid under test can still be used safely or needs to be replaced.   
.Test DOT3、DOT4、DOT5 brake fluid  
.Includes LED lights and built in buzzer  
.Good quality: 2 green LED lights  
.Bad quality: yellow LED lights  
.Unsafe quality: red LED lights and buzzer sounds.  
.Power:P1pc*9V battery  
.180° pucker electric pole