NOVA 23079 Universal Chuck Spanner Accessory is a useful NOVA Chuck Accessory. Fits all NOVA Chucks to quickly and easily loosen the chuck and chuck insert/adaptors from your lathe spindle. Features over 4 different NOVA specific functions in the one tool. Designed by the innovators of the 4 Jaw Chuck for wood turning, Teknatool International - since 1955. Backed by a full replacement 2-year warranty.