These are the top NOVA chuck accessory sellers and give a good general additional range to your NOVA Chuck. All are compatible with your NOVA chuck (use the standard fastenings that come with the chuck). The 100mm/4″ Jaws and Cole Jaws come with additional fastenings. The NOVA 25mm/1″ Jaw is convenient for small bowl and small unsupported spigot turning work. Expansion range is 1.02″-1.81″ and Contraction Square range is 1.10″-0.35″, Contraction Round range is 1.22″ – 0.39″ The NOVA 100mm/4″ Jaw is designed for expanded dovetail, reverse dovetail and for gripping footed bowls, around 12-14″ in diameter. It can also mount customized false wooden jaws, so that you can design your very own customised jaws for your special projects. Expansion range is 3.81″-4.64″, Contraction range (around bowl foot) is square 3.03″ – 2.20″ and rounds is 3.89″-2.99″. The Cole Jaws are a versatile set, designed for the re-mounting of bowls to remove chuck marks, or to add decoration, or to re-shape the bottom of the bowls that have already been turned. These standard Cole jaws are suitable for lathes with a minimum 12″/300mm swing diameter. Optional 6030 Jaw buffer kit extends the workholding options of the Cole Jaws even further. This bundle is incredible value for money.