hss machine reamer for holes 1)4F,6F,8F straight or spiral flute 2)Material:carbide,hss,hss-co hss machine reamer for holes 1)4F,6F,8F straight or spiral flute2)Material:carbide,hss,hss-co3)Types:machine reamer,hand reamer4)Size:Dia 1.0-20.0mm standard and non-standard.5)Types of shank:parallel shank,taper shank.6)Special sizes can be customized. hss machine reamer for holes