Hone engine cylinders 3-1/4″ to 4-1/8″ and 83mm to 105mm in diameter to produce a plateaued finish for fast ring seating and better oil retention for longer engine life

• Hone life is in excess of 1000 cylinders
• Requires no setup
• Use variable-speed 3/8″ electric hand drill and move the Flex-Hone® up and down in the cylinder until desired results are obtained