NOVA JS-SP45 45mm Spigot 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 Provides a strong contracting grip to unsupported spigot turning applications such as vases and goblets 2-Year Warranty