Brush Research GBD Heavy-Duty Flex Hone for Block Cylinders or Liners, Aluminum Oxide, 3-1/4" Diameter, 320 Grit (Pack of 1)

[QUALITY]- Proudly Made in the USA. The FLEX-HONE is long lasting, lowering total cost of use compared to other brush options. [DESIGN]- The FLEX-HONE is manufactured to be self-centering, self-aligning and self-compensating for wear for easy use. [FINISHING BENEFITS]- Offered in a wide variety of grits and abrasives to allow machinists to achieve specific finishing tolerances as well as a beautiful crosshatch finish. [CROSSHOLE DEBURRING]- Ideal for finishing and deburring simultaneously in a single setup. Can be used in virtually any rotating spindle. [ALUMINUM OXIDE ABRASIVE]- Excellent on aluminum, brass, bronze, and softer non-ferrous materials. 240 AO is commonly used for deglazing Nikasil cylinders.