The Shaft Extension is designed to provide additional clearance between the WHEEL's surface and the jaws of your vise. This extension gives you back the 1/2" in clearance that the WHEEL height takes up while also giving you the ability to increase the height of your vise by up to approximately 2". This product gives you the freedom to fine tune your vise height on both a c-clamp and pedestal base. So if you are on the road or just setting up at a new table, you now have more flexibility to find that preferred jaw height sweet spot.
