I have a Davidson 405-28 extension ladder that I got from Home Depot years ago (Davidson was purchased from Louisville Ladders). This is a kind of universal extension ladder. One of the end caps broke off which was annoying as the staircase wasn't stable in relation to the house at the time. I've looked around a bit and this kit from Werner seemed to meet the spec - and as you can see from the photos it did. They didn't include washers - no big deal - I just used the ones I had (small 8-32 x 5/8" screws). Make sure you know which ladder you have - because Werenr likes several different ones End Cap Kits (see attached instructions)
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