the soft grade grinding wheels are used for grinding soft materials

the soft grade grinding wheels are used for grinding hard materials

the hard grade grinding wheels are used for grinding hard materials

the hard grade grinding wheels are used for grinding soft materials

The dry condition is used to grind soft material

the dry condition is used to grind hard material

The wet condition is used to grind hard material

The wet condition is used to grind soft material.

soft grade

medium grade

hard grade

soft grade

medium grade

hard grade

hardness of the material being ground

nature of the grinding operation

finish required

all of these