----Select Product Name--- --- PRODUCT 1 ---- INTERNAL GW A-TEC GRINDING WHEEL A-TEC DOUBLE DISK A-TEC POROUS CERAMIC VACUUM PLATE A-TEC AUTOMOBILE A-TEC POROUS CERAMIC VACUUM ... CENTERLESS GRINDING WHEEL A-TEC -----PRODUCT 2 ----- RESINOID BOND   Ceramic porous chuck Porous ceramic, vacuum Plate. It shows stable and uniformed adsorption due to the porous ceramics of the plate surface. It is applicable to both magnetic and non-magnetic works due to its absorption method.