Size 8. Drilling range 5.0-31.0 mm. This robust tool allows sheets to be centered, pre-drilled, and continuously reamed in a single operation. The deeply ground flute ensures absolute smoothness and high cutting performance. The cone facilitates retraction when drilling through sheets. This sheet metal reamer is designed for high demands in industry and craftsmanship. The titanium nitride wear protection coating increases the surface hardness to approximately 2,300 HV and the hot hardness resistance to about 600 °C.