I always try to give positive reviews but this time I have to say something. are ceramics). The item I received was perfect for my car but it was a semi-metal shoe! (grey-black) I already bought a set of good quality semi-metal boots from my local parts store. but they made all sorts of squeaky noises, i wanted ceramic shoes! These shoes are well made but be careful you don't get what is in the picture. Returned, bought kit from a dealer - the noise has stopped!