This part appears to be an exact replacement for the rear axle flex hose on my 1957 Chevy Belair. The only problem (and the reason for the lower rating) is that it was promised in two days but it didn't even ship at noon on the day it was supposed to arrive. Since I had my schedule set to work on it the next day, this was inconvenient. Although I haven't installed and working a braking system yet, this item seems to fit properly.