I am 17 years old and an ASE Master Tech at GM Master tech. Due to supply chain issues and time constraints, this product had to be used about 9 months ago. This is my daily driver and it is rear brake line mounted. It took 9 months and finally broke by itself. No signs of corrosion and I can assure you it has been properly tightened. I could die! DO NOT BUY or you may die!