... and inventer and all screw. grinder sharpener , knife grinding machine, knife sharpener Max.grinding length(mm):1500,2000, 2500, ... 3000,3500,4500 can be selected. grinding machine ... ,plastic,carton and so onTechnical specification: ModelYM1500YM3000BYM3500AMax. grinding length (mm)150030003500Width of working-table (mm) ...