1) the thin Grinding Wheel are specially used for cutting,symbolized ”Type 41(PB)”
Materials: aluminium oxide, silicon carbide, etc.
The bond: resin bond, vitrified bond, rubber bond.
2)Center---- Depressed Grinding Wheel is used to the free hand grinder, symbolized ”Type 27(JB)”
Materials: aluminium oxide, silicon carbide, etc.
The bond: resin bond, vitrified bond, rubber bond.
The special requirement of English size of aperture can be met.