Features: Brand new and high quality Center and pilot drills are traditionally used to make a tapered hole in the center of a lathe to make a starting point for a standard twist drill, designed to prevent the twist drill from walking. Used for center clamping of part or workpieces that need to be manufactured between machining centers. Made of high-speed steel, which has higher wear resistance and hardness.Strong performance, high temperature resistance, anti-burning drill. High-strength and large-capacity spiral chip flute, integrally formed spiral, good versatility and durability. Large blade diameter design can greatly increase the stability and vibration resistance of the tool. Specifications: Material: High Speed Steel Type:5Pcs/6Pcs 5Pcs:1.5mm/2mm/2.5mm/3mm/4mm 6Pcs:1mm/1.5mm/2mm/2.5mm/3mm/5mm Package Includes: 2 Package Optional: Package 1 Include:5x Center Drill Bits Package 2 Include:6x Center Drill Bits note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.