Description These are drill bits,theycan be used for all kinds of wood, wood products, plastics, plywood and other materials. High-speed steelmaterial, these drillbitscan be installed on drilling machines, milling machines and tapping machineswith high precision and create super clean cuts. Features -Color:As shown. -Material: High-speed steel. -Size: About7x0.5x0.5cm/ 2.75x0.2x0.2 inch. -Material and surface treatment: High-speed steel drill bits are very suitable for general use, with high hardness and toughness. -Titanium coating can improve wear resistance and melt resistance, and has a long service life. -Application: Very suitable for through-hole threads. It can be used for drilling and tapping stainless steel (below 30HRC), aluminum, die steel, ordinary steel, non-ferrous metals, hard plastics, etc. -Usage: Suitable for drilling machines, tapping machines, CNC and milling machines. -Use with tapping oil to obtain higher quality threads and more durable taps. Package list: 2 x drill bits