10Pcs 2.2mm Cutter Dia 1/8 Shank Spiral Flute Tungsten Carbide Micro Carving Drilling Dremel Drill Router Bits for Copper Aluminium Jewelry PCB Print Circuit Board Carbide (2.2mm10pcs)

Blade Diameter:2.2mm Shank Diameter:1/8 (3.175mm) Overall Length:1-1/2(38mm). Material:Tungsten+HSS.High strength and high hardness performance.long tool life. Using high quaility materials and fine grinding process makes bit more sharp cutting edge. Suitable for:Copper Aluminium Print Plastic Circuit Board PCB SMT CNC board etc. Package:10 pieces per sizes 1.Made from ultra-fine grain carbide material which of good milling properties to ensure efficient work. 2.Notice Before Purchase:PCB drill and PCB mill cutter are different kinds of bits have different kinds of usefulness. 3.Carbide tools offer long tool life and faster cutting speeds than other substrates but more brittle make sure work piece and machine are stable.