I spent a lot of time and some extra money trying to figure out why one side worked and the other didn't. I first looked everywhere but this product, two days later, a master cylinder and another set of brakes from my local auto parts store to find that the pads were not accurately sized. The images show that the petals were not machined or stamped to the correct tolerances. This made it impossible to install the driver's side without being bound to the drum when set to its lowest setting. It was a disappointing purchase.