Min. Order Reference FOB Price
5 Pieces US$5.00-30.00 / Piece
Product Description
Tungsten Carbide Step Drill Bits 1.HRC55 ,HRC60 high hardness carbide rods HRC55 HRC60 HRC65 YG10.2 &WF25(Taiwan) K44 &K40 H10F Grain Size:0.6um Co:10 % Flexural strength:4000N/mm2 Grain Size:0.5um Co:12 % Flexural strength:4300N/mm2 Grain Size:0.4um Co:12.5 % ...