Ah, so that's what that is. I sometimes see a circular area on the extension, that must be it.

Call me a nut, but when you blow up the picture, it looks like the screw penetrated the tube. Possibly not all the way, but it could have weakened the tube.

Lot's of Damascus sets have steel extensions.

Regards
Ken

Last edited by Ken61; 09/28/17 03:56 PM.

I prefer wood to plastic, leather to nylon, waxed cotton to Gore-Tex, and split bamboo to graphite.