RE: 1/4 IN SHAFT SAVER THATS 1/4 IN
You Can always cut the TSB saver in half and then you will have Two and as far as the set screws damaging the flex shaft
the set screw is softer than the flex shaft and we (TSB) have never had a problem using the kind with set screws. We have used
this style for years and have not had any complaints. The other kind that is used is bought from McMaster and the aren't balanced as well as the kind with set screws.