Drill accurate center holes in material prior to turning, or use as a starter bit for accurate holesHigh speed steel (HSS) made, stable performance and DurableSharp and twisted drill will make the drilling be more easy and effortlessStraight shank design is more suitable for many electric drills and drilling machinesSuitable for metalAccurate center hole drilling on material before turning, or as a drill bit for precise drilling. Dimensions 1mm / 1.5mm / 2.0mm / 2.5mm / 3.0mm / 5.0mm Inclination 60 DegreeMaterial: HSSColor: silverHow to use: 1. Traditionally, make a conical hole for the center of the lathe with centering and biting drills to create a starting point for standard twist drills to prevent the twist drills from traveling. 2. For processing between the center of the workpiece or production center components.Package Contents: 18 * Center drill bitOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.