The Onsrud Double edge upward spiral forces the chip evacuation upwards towards the shank leaving a smooth finish on the surface

Cut Diameter: 1/4"

Shank: 1/4"

Cut Length: 3/4"

Overall Length: 2 1/2"

Flutes: 2

Flute Type: Upcut

The two fluted cutting edge can machine materials up to 3 1/8"  thick and will consistently leave a smooth finish.