These cove style cutters with two flutes, give radiused grooves for decorative panel finishes & board edges. For deep channels, take a series of passes. Ref. C056A is used with the Trend Draining Groove Jig. D=1 inch. D=25.4 mm. Cut length=5/8 inch. Cut length=15.9 mm. Overall length=56.5 mm. R=12.7 mm. Shank Diameter=1/4 inch.