1.chucking reamer, special reamer 2.straight shank, taper shsnk 3.hss co, hss, solid carbide can be avalible. Our factory ... , Round Rod, Tool Bit, Carbide Tip, Ejector Pin, Punch, Mold Etc.1.machine reamer usage: Milling fitting holes with a ... application.hardnessGood for machining up to HRC65 degree carbide step reamer drilling and milling reamer and tapered hand reamer with spiral / straight flute