Alpha SG4C11 SG 4" Wheel-Course 5/8"-11 Thread
Surfacer Grinding Cup Wheel
introduces the Surfacer Grinding Cup Wheels a new grinding wheel system
to smooth out the underside of tabletops. This two-step process is
available in two grit types: black for coarse and white for fine. The
coarse grit is designed for fast material removal and the fine grit
smoothes out the surface of the stone.