NOVA JS50N 50mm (2") Chuck Accessory Jaw Set Special NOVA dovetail profile, designed to maximum strength and holding in wood turning, without crushing wood fibers All NOVA Chuck accessory jaws are designed to hold in the expansion and contraction modes Same jaw fixing system across all NOVA Chuck models - total system interchangeability Versatile all round jaw, somes standard with most NOVA Chucks 2-Year Warranty