Colour:black/greenGrit:36#-1500#Hardness:2P-12PMax speed:3000rpmDiameter:100mm-400mmThickness:5mm-100mmHole size:19mm/25mm/32mmHole shape: round/hexagonal/squareRemark:can be done as customer request For cleaning and polishing surface and rust, especially in stainless steel workpiece. Powerful cutting resistance, identical finished surface.Excellent self-shaping and nice bright.Low noise and less dust.Stainless steel knife,scissor, tableware and vacuum flask.metals of construction, handle, hinge, gate lock and door hinge.Wipe off the burr of golf and cue.Bakelite, wood and plastics.