Just because some chinese workers can pour metal into the same shape as the OE parts does not mean they meet standard. Your life depends on your cars ability to stop. Do not put your life into the hands of cheap chinese crap from eBay just to save $20. I'd like to see a picture of these parts. I bet they're OP Parts rotors and pads (literally $20/$15 on BMAparts.com) but sold on eBay with an extreme markup. Note that chinese parts are unbranded. They look great, but the truth lies underneath.