FLEX HONE GB31232 Cylinder Hone, 3-1/2 Inch Bore, 320 Grit, Silicon Carbide

It has a 320 grit and a maximum speed of 1200 rpm. Manufacturer Part Number: GB31232. The FLEX HONE Cylinder Hone is also often referred to as Flex hone, Cylinder hone, Engine hone, Block hone, 3.5" hone, 320 grit hone, and Flexible hone.

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