NOVA 6008 Dovetail Chisel Chuck Accessory is an accessory for NOVA Chucks. It enables the user to quickly and accurately make the dovetail recess for the chucking of a bowl. Ensures a dovetail with a sharp, clean edge to match up exactly to the dovetail contour of the NOVA Accessory Jaws, to give maximum holding power to your NOVA Chuck. Scaled with a handy mark out scale for use as a guide. Designed by the innovators of the 4 Jaw Chuck for wood turning, Teknatool International - since 1955. Backed by a full replacement 2-year warranty.