Are the TotalBoat Microballoons considered fine like the MAS Microballoons?

TotalBoat Microballoons have an average micron size of 85 microns, while MAS brand Microballoons have an average diameter of 70 microns. Both are considered low density and for fairing, despite the size difference. The TotalBoat Microballoons are also better for casting or thicker applications, requiring less adhesive material due to the size of the microballoons.