Cheap price, cheap product… doesn't remove burrs but creates them by itself. Very poor quality, bought as a last resort and very sorry. Save money for real tools.
Pros
Eliminates vibration and vibration - 90° point angle for sharp and accurate countersinking. The cutting edge is hardened and sharpened for sharpness. Quiet five-tooth cutter with offset cutting teeth for free chip flow and fast, vibration-free cutting.