Woodboring Bit Extensions
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I purchased five 12" extensions so I could use up to 5 feet. In the process of putting them together one set screw, of the two on the extension, split when tightening using the short allen wrench with the unit. Now it is not possible to remove the set screw. It appears that the screws are not made from hardened steel. At first look after one split I thought they were plastic. In my 58 years I have had set screws round out or round over an allen wrench but never had one split. The extension are well made and finish and fit is very nice, just need to use much better set screws.