Baaron 12"x1-1/2"x1-1/4" Coarse Grinding Wheel made in Wooster Ohio. CA16P4B. 1-1/4" Arbor. Max rpm is 3024. I won this at an auction and I honestly don't know much about them. I believe it's Carborundum with a resin bond. Appears brand new. No marks in or around the arbor. Very clean, no visible damage. Had been sitting in a box in a very well taken care of garage. Please view photos for best description. Message me with any questions. Thanks