Auniwaig 3.15mm x 10mm Center Drill Bits Combined Drill Countersink Lathe Mill Tool Set HSS-6542 60 Degree Combined Drills Plain Type B with Protective Cone 5pcs

Auniwaig Center DrillPackage Content:5pcs x Center DrilSpecification:Color: SliverMaterial: High Speed Steel ( HSS )Shank Diameter:10mm / 3.93inchWorking Edge Length:4mm / 0.16inchBit Diameter:3.15mm / 0.12inchTotal Length: 55mm / 2.17inchDescription:1.Quick cutting speed, and good chip removal for precise center drilling in metals.2.Each bit has a double end and grinding at a standard 60 degree angle.Sharp and durable, accurate positioning, cutting edge clear.3.Used for all kinds of materials. can be applicable to metal, alloy, iron, steel, copper, aluminum and other processing.4.Used for producing center holds in components or work pieces with require machining between centers.5.Center and spotting drills are traditionally used to make a conical hole for a lathe center in order to make a starting point for a standard twist drill, designed to prevent the twist drill from walking.Note:1. Size for manual measurement, there may be a 1mm- 3 mm error, belongs to the normal phenomenon.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!

• 【Precisely Processing】- Center and spotting drills are used to make a conical hole for a lathe center in order to make a starting point for a standard twist drill, designed to prevent the twist drill from walking.
• 【Convenience】- Easy to use and install; change bits fast which one-handed load and release. Available for all Kinds of Materials: Metal; Alloy; Copper; Iron;Wood; Aluminum and so on
• 【Durable and Resistance】- Center drill bit is made of HSS high speed steel, with extremely sharp blade; low consumption and durable with impact resistance; wear resistance
• 【Material and Features】- High Speed Steel; high hardness; rustproof; solid; durable and excellent for use
• 【Size】- The shank diameter of this center drill is 10mm / 3.93-inch; the bit diameter is 3.15mm / 0.12-inch, the working edge length is 4mm / 0.16-inch; and the total length is 55mm / 2.17-inch