Features Enhanced Efficiency: Complete drilling and countersinking in one go, saving time and improving work efficiency. Convenient Storage: Comes with a storage box for easy portability and maintaining drill cleanliness. Deep Chip Groove: Features a deep chip groove to efficiently remove chips and debris, reducing friction and heat for faster and cooler drilling. 5-Piece Set: Includes 5 drill bits of different sizes, catering to various drilling needs. Easy Replacement: Easily installable round shank drill bits, serving as ideal replacements for old or damaged parts. Features: 1、Improve Efficiency: With the help of these drill bits, drilling and countersinking can complete at one time to improve work efficiency. 2、Easy to Carry: This drill bit set is equipped with a storage box for easy carrying and helps keep the drill clean. 3、Deep Chip Groove: Deepening the chip groove helps to remove chips and debris from the tap, reducing friction and heat, thus enabling a faster and cooler drilling process. 4、5Pcs: There are 5 pieces drill bits in this package of different sizes for you to meet different needs, you can use them at will. 5、Ideal Replacement: These round shank drill bits can be easily installed, ideal replacement for the old and damaged parts. Specification: Item Type: Countersink Drill Bit Set Material: Alloy Steel Package List: 5 x Countersink Drill Bit 5 x Wrench 5 x Storage Tube Package List 5 x Countersink Drill Bit 5 x Wrench 5 x Storage Tube