1.Type:End mill of PCB 2.Material: Tungsten 3.Specifications:Stronger Hardness, Abrasion Resistant,Corrosion Resistant Specifications:1.PCB End Mill,materils is solid carbide tungsten2.Good for:Prined circuit board,high density fiber board(HDF),hard wood,carbon fiber,fiber glass,HDF composite board3.Stronger Hardness, Abrasion Resistant,Corrosion Resistant4.higher hardness,higher wear resistance, ...