Sparex source: https://us.sparex.com/metal-grinding-disc-4-x-1-4-x-5-8-a24rbf-11745.html Product: Metal Grinding Disc 4'' X 1/4'' X 5/8'' a24rbf - Sparex S.11745 SKU: S.11745 Listing note: 15,300rpm - 80 M/S RPMManufactured to European quality standards, a high performance disc designed for speed, accuracy and long lifeProflex discs offer professional quality performance and are a great value product for heavy duty abrasive grinding.Manufactured to European quality standardsSuitable for use on Mild Steel, Steel Pipe, Sheet Steel, High Grade SteelReduced vibration for smooth grindingExceptional price-perfomance ratio. Detail enrichment pending: OEM cross references, fitment, catalog pages, and full specifications.