grinding spongsAX-O blancThe grinding blocks are made of a rubber compound and are chemically neutral and silicone-free. Products namemanufacturegrain sizedimensionsmaterialtypeitem No.grinding spongArtifex240 (fine)80 x 50 x 20silicon carbideSC 240 MZ507090grinding spongArtifex120 (medium)80 x 50 x 20silicon carbideSC 120 MZ507089grinding spongArtifex60 (coarse)80 x 50 x 20silicon carbideSC 60 MZ507088