size: 20X25X6mm grain: aluminum oxide grit:60-400 application: for metal etc flap wheel with shaft1.Background: Our factory have specialized in abrasive products for 14 years with 300 workers, owning a group of professional R &D people, located in Linyi City,Shandong Province,China.2.Products: We mainly deal with abrasive flap disc, abrasive flap wheel, abrasive flap wheel with shaft, sanding ...