Description:

Size: Bit Diameter: 4.1mm; Flute Length: 35mm / 1.4"; Total Length: 73mm / 2.9"; Shank Diameter: 4.1mm. Product Name: Twist Drill Bit; Package Content: 12pcs x Twist Drill Bit. Material: Cobalt-containing high-speed steel drill bit, high wear resistance and toughness, not easy to break, sharp cutting edge, effectively improving drilling speed.. Application: Suitable for processing non-ferrous metals (such as copper and aluminum), non metallic and ferrous metals (such as iron, steel and stainless steel).. The advantages of full grinding: High geometric precision, strong cutting ability..