... 2mm-16mm alloy steel ,stainless steel Used in various ring-pellet mills(Made in China and oversea CPM, Buhler ,Munch) ... produce poultry feed ,fish feed, cow feed and sawdust pellet ,straw pellet ,and fertilizer pellet Size of roller :groove roller, dimpling rollerMaterials: alloy ... drilling accurate hole machiningVacuum hardening high strengthOptimum arrangementfor specified application pellet mill die