78 piece set.

In response to popular demand, SUNBURST^® offerings now include silicon carbide grit models − preferred for numerous precision medical, dental, jewelry and aerospace applications.  

This comprehensive set includes: 4 each 5/8" & 7/8" Knife-Edge Discs, 7/8" Radial Discs, 7/8" Dual Discs and 12 Points in all shapes and grit textures plus two 3/32" mandrels.