Is that a brand name? I'm having some difficulty finding CBN cup wheels on my regular back alley AliExpress haunts. There are 20 diamond wheels for every 1 CBN it seems & far fewer form factors/grits. And I'm not sure I trust their description at the best of times. The language or use of 'color' to describe part/size variations is even more apparent when it comes to wheels. If it says CBN specifically I would say fair game.the mu-shu CBN wheel