HSS Gear Hobs Milling Cutter: 1.Module: m1-m40 2.ClassAA , ClassA , ... right hand 4.Material: HSS HSS Gear Hobs Milling Cutter:1.Gear hobs,spline hobs,standard gear hobs,sprocket ... hobs, serration hobs,timing pulley hobs 2.DIN/BS/JIS/GB Gear hobs,spline hobs,standard gear hobs ... hobs, serration hobs,timing pulley hobs Stardard: DIN/BS/JIS/ASA/GB ModuleOutside dia.Cutting edgelengthTotal lengthBore dia. ...