... green, friable, medium bulk density silicon carbide abrasive grain. Description:GC-GPA is a green, friable, medium bulk density silicon carbide ... carefully to get a complete range of grit sizes.Applications:GC-GPA can be used in refractory, ceramic and abrasive area ... , 24, 30, 36, 40, 46, 54, 60, 70, 80, 90, 100, 120, 150, 180, 220.Microgrit Sizes Available:F240, 280, 320 ...