Norton RazorStar Fiber Disc Extreme Test Results (38 of 40)

[@WilliamGushulak]

watching all the testing has given me excellent information that will be put to good use. thank you.

[@tomthompson7400]

Your going well.

[@paulcohen1555]

Please explain what the "fiber" material is, what is "zirconia", "ceramic" and other special words used.