R32 Normal Skirt Tungsten Carbide Drill Rock Cross
R32 normal skirt tungsten carbide drill rock cross bit for limestone. Description for R32 thread cross drill bits : 1.Mterial: drill bit made from 45CrNiMoV alloy steel , Carbide :Element T6 . same as Atlas , Sandvik . 2.Type: Hot-press inserting .
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