Includes 19 drills from 1 mm to 10 mm x 0.5 mm in a plastic case.Rolled flute with high elasticity and a low risk of breakage due to manufacturing process.Drill bits have a cylindrical shank (shank equal to drill bit diameter) and designed for use in drill stands and drill drivers.Oxide coating reduces wear still with good and rapid chip removal.High-speed steel (HSS) drill for drilling in bronze, brass, carbon steel, cast iron and alloy steel.Manufactured to DIN 338