for the price, they're excellent-- that said, they're often half the price of a "quality" rotor/drum. I have used them many times in the past with great results, but I still spring for the North American built, high dollar stuff for anything I will be using for more than a play toy or daily commuter (I only see 6 miles a day @30 mph) If I'm gonna put the wife and kid in it and trust it to get us somewhere safely, I'm buying the products that are built with some quality control checks.