Solid Tungsten Carbide Milling Cutter For Mica Undercutting For Hitachi Traction Motor Commutator Segment Champering. Size : 7/8 Od X 5/16 Id X 1.1 Mm Thick X 20 Teeth Having Clearance On Alternate Teeth & With Provision Of Taper 0 Degree 20 Degrees On Both Sides Of Each Teeth (Zig Zag Teeth) & With Dished Up Collar. Material Tungsten Carbide To Iso Gr K 20 As Per Drg. No. Bsl/Trs/Sk/3/563, Ref B Or Latest If Any. Note: One Sample Should Be Got Approved Before Effecting Bulk Supply.