Silicone carbide black #16, #24, #36
A 24-grit abrasive particle has an average size of approximately 0.70 to 0.76 mm (700 to 760 microns).
A 36-grit abrasive has an average particle size of approximately 0.5 mm
A 16- grit abrasive, it measures between 1.1 mm and 1.4 mm