I didn't know if these lock covers would fit the Thule car racks my friend gave me. I did some research and looked at pictures. Found your site and bought the locks & covers. Didn't know that the covers has the screws attached. I thought it wasn't going to fit, but I tried it anyway. Took off the screw that was on the rack, screwed on the new one. Took a couple of tries, but I figured it out. It fits perfect and it locks too.