General description These 7pcs 5 Flute Countersink Drill Bits are specially designed for woodworking and chamfering tasks. Made from durable high carbon steel with a titanium coating, these bits offer superior cutting power and longevity. They allow you to drill and countersink in one step, ensuring quick and accurate results without flexing. Technical specifications Material: High carbon steel with titanium coating Flute design: 5-flute for faster chip removal Adjustable drilling length Size range: 3-10mm Usage Suitable for wood, PVC, and plastic panels Not suitable for glass, iron plates, and steel plates