Dovetail / Trailing Bit (Top Left): Used for cutting tight-fitting dovetail joints.Core Box / Round Nose Bits (Middle Left): Cuts semi-circular grooves for decorative fluting or signs.V-Grooving Bit (Middle Right): Engraves sharp V-shaped lines or chamfers edges.Rounding Over / Corner Round Bit (Bottom Left & Top Right): Trims sharp edges down into smooth, curved profiles.