90 Degree 4 Flute Chamfer Drill Bit, Solid Carbide Spiral V Groove Deburring Tool for Steel /Stainless steel

Description:

(1) Brand: SUREWEL

(2) Material:Carbide Tungsten

(3) Coating: AlTiN Coating

(4) Valve stem diameter: 4mm, 5mm, 6mm, 8mm, 10mm，12mm;

(5) Best applicable materials:

AiTiN:garbon steel/salloy steels/tool steels/alloy steels/pre-hardenedsteel