... Aluminum body++bean grinder machine with Aluminum TEFLON coated alloy casted, powder outlet port.++bean grinder machine with 64 mm, Specially hardened flat grindstones++bean grinder machine with Micro ... :ü ETL,CE,GS,CETL,KCü NSF Sanitation listed bean grinder machine, with 2 operating modes:continous grinding and on-demand grindingadvanced hand handle system