12 PCS HSS Combined Center Drills Bit Set Countersinks 60 Degree Angle (12Pcs,5/3/2.5/2/1.5/1mm)

• You will get 12pcs bits in a plastic bag:5/3/2.5/2/1.5/1mm(each size you will get 2 pcs).
• Material and Features: High-speed Steel, high hardness, rustproof, solid, durable and excellent for use.
• 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.
• Wide Usages: Center drill bits can be used to make conical holes for a lathe center in order to make a starting point for a standard twist drill, designed to prevent the twist drill from walking, as well as for producing center holds in components or work pieces with require machining between centers.
• Available for all Kinds of Materials: Metal, Alloy, Copper, Iron, Wood, Aluminum, and so on.

Drill accurate center holes in material prior to turning, or use as a starter bit for accurate holes in stock. Metric Sizes: 1mm / 1.5mm / 2.0mm / 2.5mm / 3.0mm /5.0mm 60° tip angles. Imperial units:1/8" 3/16" 1/4" 5/16" 3/8"