Needed to trim width of store bought granite vanity top. Read many reviews, and decided on this design; others have square nubs that were flaking off during use, and I wanted to avoid that. Plus, I liked the reduced number of steps to achieve the final result. With this product, I had no issues with separation and the polishing wss good.The end result was a nice finish. Being that the newly polished end was next to the toilet, I wanted to ensure that it looked as good as the original product, and it does.The only item of note... I was sealing the granite top and found a manufacturing defect in the granite top where the original polishing was not complete, so grinder marks were discernible and the granite sealer struggled to keep water out. I tried to use these disks to polish out the fine grinder marks. While it greatly reduced the original grinding marks, the best polishing still did not match the original. But, only I would notice that, as the difference is mostly imperceivable.Note that this is a polishing product. It will not remove much stone, which is to say that you need a separate disk or grinder to get the stone down to your desired line ... you will not be able to grind the stone much at all with this, just polish the final cut.Overall, this is a solid product with no complaints from me, a first-time granite polisher.