... is applied with pressure against the surface of metal,it removes small bits of metal.Saw Files:Types:Regular Tapers,Slim Tapers,Extra ... forming various arcsMill Files:Type:MSGG(Mill Saw both sides square edge),MSGR(Mill Saw one end square edge,another side round ... edge),MSRR(Mill Saw both sides round edge),Mill Taper(Mill Saw Taper Files),MSRU(Mill RUK both ...