Why are there two numbers for that grit size? Equally the ANSI grit standard from the US plus the FEPA grit standard in Europe relate to a median particle size, but use slightly different measurement methods. Silicon carbide modules are considered essential for enabling higher electric drivetrain efficiency of EVs. https://www.quora.com/profile/Trevor-Flatcher-2/Silicon-carbide-special-ceramics-in-modern-industry-in-a-variety-of-applications-Silicon-Carbide-Special-Ceramics-in-Mo