General description These 7pcs 5 Flute Countersink Drill Bits are designed for woodworking and chamfering tasks. They feature a special design that allows for drilling and countersinking in one step, ensuring quick and accurate results without bending. Technical specifications Material: High carbon steel with titanium coating Flute count: 5 Drill bit sizes: 3-10mm Compatibility and accessories Suitable for wood, PVC, and plastic panels Not suitable for glass, iron plates, and steel plates Installation Adjustable depth of sleeve with a hex key Drilling length can be adjusted using a key to remove or adjust the adjustment screw Usage Fast positioning and chip removal with a 5-tooth countersink Three-point positioning to prevent slipping