The Cole jaws are a very versatile set designed primarily for the re-chucking of bowls to remove chuck marks or to re-shape the bottom of bowls that have already been turned. The Cole Jaws come with a set of extra long mounting screws, which enables you to mount the 50mm, Step, and 100mm jaws onto the face of your Cole jaws, allowing you to do you bowl from start to finish with out changing jaws. All the facilities of the other jaw sets can be fully utilized in conjunction with the Cole jaws. These jaws more than any other really begin to explore the tremendous versatility of the Nova Chuck. A special woodworm screw (optional) can be used for initial bowl mounting. With this combination of holding methods, it is possible to turn a bowl from rough blank to a completely finished smooth bowl with just this one jaw set. The Nova Chuck Cole jaw combination is the only chucking system to allow such a complete facility without any complex jaw changes or different set ups. There are a number of re-chucking options; false wooden jaws can be added, wooden dowels used or rubber stoppers which are provided with the basic kit. You can also purchase the 6030 extended bumper kit for added versatility. And finally, we have included 4 extra standard jaw mounting screws, WHICH YOU DONT NEED UNTIL ONE DISAPPEARS IN THE SHAVINGS WHILE CHANGING JAWS!