The Ofrei pushers usually fit the threading made by the smaller of the 2 Rolex taps (I have received a couple of DW cases that had pusher holes that were too large for the standard pushers, including the pushers that came with the case - in those cases, you need to either get a larger diameter pusher or cement the pusher into the existing hole). However, because of the variability of rep cases (including DW's), you will not know whether you need to retap until you check your particular case. Some of mine required tapping, while others did not. I use this pusher tool for all of my Daytonas
Ofrei part MSA03.655