8"-20T. Punta in metallo duro grande, pergolato 1" con adattatore rondella 7/8"-20Mm-5/8, taglio a spazzola
But regrind need skill. If you don't have experience, find others help you. High hardness 88 HRC, Can make sure cutting the grass, bush, bamboo, small tree and so on in ultra sharpness and long working life.