Hilti 22-Volt Lithium-Ion Cordless Brushless 4 in. Burnisher/Grinder and Abrasive Kit 3650346 - The Home Depot

Hilti's SPX metal cutting diamond blade improves jobsite productivity, while being exceptionally versatile. This blade reduces the need to change discs frequently, getting up to 100X the life of standard abrasive blade and decreasing the number of blades your crew carries to get the job done. The diameter of the blade does not decrease over time, maintaining a consistent cutting depth through the lifetime of the blade. This innovative metal cutting blade is made of high-grade diamond grits, electroplated and exposed along the cutting edge to maintain its edge and cutting capability. The Hilti SPX metal cutting diamond blade is certainly a pro-level item that you can depend on