Description:With unique step structure, one drill bit can open a variety of specifications and sizes of apertures.Compared with ordinary twist drills, it shakes less and can produce beautiful apertures without leading the use of center punch.Made from premium high speed steel material, the drill bit is high hardness, rustproof, solid and durable.The total length of drill bit is 106mm, the diameter of drill bit is 60mm, the length of shank is 24mm, the diameter of shank is 13mm.It is very suitable for using to cut holes in a variety of materials, including steel, brass, wood, plastic, etc.Item Name: Step Drill BitMaterial:High Speed SteelSize Details:Hole Range: 0.6cm-6cm/0.24"-2.36" (Approx.)Bit Length: 10.6cm/4.17" (Approx.)Bit Diameter: 6cm/2.36" (Approx.)Shank Length: 2.4cm/0.94" (Approx.)Shank Diameter: 1.3cm/0.51" (Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 X Step Drill Bit