Quoted from mof:They seem to slip right off my Bally flippers on Centaur. Perhaps they won't work on old Bally flippers?
-mof
I had some that were slipping up on new bats. use some sandpaper and rough up the ends of the bats were the rubber sits. It should stay put after that.
+1 on the stretch the rubber a time or two before putting it on.