A high quality 4-1/2" Grinding Wheel made by Pferd in Germany. This grinding wheel is designed for aluminum & non-ferrous metals with fast stock removal & long service life. Also good for copper & soft greasy materials susceptible to cause loading problems. 4-1/2" diameter of wheel. 5/8"-11 Threaded hub. 1/4" thickness of blade. Depressed center type blade.  Made in Germany.,Established near Cologne, Germany in 1799, the Pferd brand name is synonymous with outstanding premium-quality tools & abrasives. Today, we manufacture more than 7,500 Pferd brand grinding, cutting & surface finishing tools, & a complete range of power & maintenance brushes. Pferd 4-1/2" Aluminum Grinding Wheel - 1/4" Thick ~ 5/8-11" Thread