Set of tapered countersink bits in a robust plastic case, 8 pieces. For countersinking and deburring. The hexagonal shaft ensures very good power transfer. Guaranteed vibration and chip-free work. Efficient chip removal and long life. With a high quality, ergonomic bit holder fitted with a magnet. The Rapidaptor quick release attachment guarantees lightning quick bit changes without the need for auxiliary tools. For mounting in a screwdriver or the chuck of an a electronically controlled drill.