This listing is for a set of 2 Coastal brand new-in-package grinding wheels for general purpose grinding and sharpening. They are aluminum oxide vitrified and made in the USA. The dimensions are 6“ x 1“ x 1/2“ and include 1/2” bushings. The maximum operating speed is 3825 RPM. One wheel is coarse grade and one wheel is medium grade. These generally sell for $20 each. From a smoke-free, pet-free home. Cash and Venmo accepted. I can mail this item to you if you pay shipping costs - I’ll text you the total amount once I have your address and after you approve/Venmo payment, I’ll send it out and provide you a tracking number.