Smoothing for groove surface
Smoothing for curves surface
Smoothing for convex surface
Smoothing for rough surface quickly
Grain direction
Uneven direction
Bevel direction
Inclined direction
Size of disc
Gauge of abrasive
Thickness of abrasive
Correct grade and type
Quick constructed
Fire resisting property
Prevent the terminals
Prevent the decay
Bevel to side walls
Inclined to side walls
Horizontal to side walls
Floor and fixed walls