Someone had previously posted looking for interior trim caps for under handrails. I am in the process of replacing mine and when I removed the caps on my O'day 25 most cracked pretty badly. In my search, I found someone on line who sells 3/4" plugs at .10 ea., shipped! They are an exact match for the old plugs and they've got many sizes available. Greg http://www.plasticsfasteners.com/LockingHolePlugs.html