343-1407, Dormer, Dormer R100 Series Solid Carbide Twist Drill Bit for Non-Ferrous, 3.5mm Diameter, 70 mm Overall, Brand Dormer, Series R100, Material Solid Carbide Dormer R100 Series Solid Carbide Twist Drill Bit for Non-Ferrous, 3.5mm Diameter, 70 mm Overall