Size:

Outer Diameter: 125mm
Thickness: 16mm
Inner hole: 12.7mm

WA -- White

Material: White fused alumina
Feature: Very high hardness and sharpness
Application: Ideal for high carbon steel, chilled steel, high speed steel and alloy steel; Mainly used for blade, thread, drill, gear etc.
Grit: 46#,60#,80#,100#,120#

GC -- Green

Material: Green silicon carbide
Feature: High hardness and brittleness
Application: Ideal for hard alloy knife, Metal and non-metal
Grit: 46#, 60#, 80#, 120#

A -- Black

Material: Brown corundum
Feature: High hardness and toughness
Application: Ideal for carbon steel, cast iron
Grit: 46#, 60#, 80#, 120#