Features:  -[High-quality material]: It is made of high-speed steel and has 6 sizes with different diameters for you to choose, and the drill bit is not easy to become blunt;  -[Good performance]: Five chip flutes design provides a smaller chip load and faster removal speed, making it easy and convenient for you to use;  -[Easy and Convenient]: The sawdust can be discharged faster and smoother during use;  -[Chatter Elimination]: The serrations are arranged in staggered arrangement to ensure free chip evacuation and fast cutting without chattering, and noise is reduced to a minimum;  -[Wide application]: This is an ideal drill tool for chamfering, deburring and countersinking. It is suitable for workpieces with low hardness such as wood, and can also be used in households and industries.     Specification:  Produce Name: 5 Flutes Hex Shank Countersink Drill;  Material: High Speed Steel / HSS;  Surface Treatment: Titanium Coated;  Flute: 5 flutes;  Tip Degree: 90 Degree;  Color: Golden;  Shank Size: 1/4inch (6.35mm) hex shank;  Sizes: 6mm,8mm,9mm,12mm,16mm,19mm;  Length: 48mm/1.88 inch;  Application Material: Wood,plastic,Aluminum plate etc;  Quantity: 6 Pcs x Countersink Drill Bit.     Package Included:  6 Pcs x 5 Flutes Hex Shank Countersink Drill