This thread lock helps prevent accidental loosening of screws, particularly under the effect of vibrations. Unscrewing the screws completely or partly problematic, the thread is coated with the product and is repositioned. This brake normal net, color blue, is not final, it will allow new interventions on the screw in the future. 2 faults I find it a bit too liquid, this even by shaking, and the neck is too thick, sometimes preventing access screws located in the corners (screw guard certain bicycle brakes for instance). But a simple cotton swab solve the problem.
