Brush Research GB41812 Flex Hone, for Engine Block Cylinders, 4-1/8″ Diameter (105mm), 13-1/2″ Overall Length

Produces a controlled surface condition unobtainable by any other method. A resilient, flexible, honing tool with a soft cutting action. The abrasive globules each have independent suspension that assures the FlexHone to be self-centering, self-aligning to the bore, and self compensating for wear.