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5pcs 82 Degree Chamfer Angle HSS 5 Flute Countersink Drill Bit Set Tool Features 100% Brand New and High Quality. Fits for chamfering workpiece deburring, sunk bore, tapered bore. Can be used in drilling wood, plastic boards and other boards. Compared to ordinary chamfering, the blade is more sharp, higher hardness, the chamfered surface is more smooth. 5-flute design for smooth, chatter-free cuts Specifications Material: HSS Color: as shown in the picture Handle type: round handle/ Hexagonal shank Round handle size: 1/2: 40mm, 5/8: 42mm Round handle diameter: 6mm Hexagonal shank size: 1/2: 60mm, 3/8: 48mm, 1/2: 50mm Hexagonal shank diameter: 6.35mm Chamfer angle: 82 degrees Package included: 1X5PCS Drill Bit Set