Diamond Hand Polishing Pads for Marble, Set of 4 (#400 #800 #1800 #3500) Brand: CHOROZUYA I polished the marble in my home's entrance with these, and now the light bulbs reflect clearly. It takes time and effort, but it's convenient to have a set. I am selling these because I have had fewer opportunities to use them after moving. I purchased these new for over 10,000 yen.