The giant wingnut used to clamp the screw to your workbench is very big, which makes it a lot easier to both tighten and loosen the screw. The wingnut has a hole it in for engaging the screw when you are screwing the screw into the work.
Once upon a time we offered two sizes but now we have just one — 9″ overall with a 1/2″ shaft — ideal for large carvings or for those working with a very thick workbench.












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