This set has well helped me solve my problem. The price is indeed tight but the disks appear to be worth the money. I had seized aluminum valve caps small cut on the wheel in order to remove it from the valve can. Here precision was required to inflict a not more damage. That with the Dremel and these discs work perfectly. The original parts are flown before me several times around the ears. There were some situations in which the disc was hit and I thought that this is now broken again into a thousand pieces. But nothing there. A single slice was enough for all four valve caps. And she's still quite. I am thrilled and can only recommend this product despite the high price. I would buy the discs again.
