Knew I had seen this before, went to the SEARCH function and found this posted by Gene Grundmann ----
Gene Grundmann
Re: Door handle ferrule installation tool?
« Reply #5 on: December 26, 2007, 11:40:03 pm »
Bob
If you have not yet installed your ferrules, here is a $.30 tool that works great. Get a lug nut, they are all tapered on one end. Find a matching bolt and place it through the ferrule. Screw the lug nut onto the bolt taper end first. The taper will spread the ferrul and lock it in place.
Geoff N.