They do okay but aren't as good as the OEM
I've shaved with these blades and heads several times.  They are better than my really, really old ones, but they aren't up to the performance of the OEM blades.  It just takes more passes to get the same shaving performance.  The blades do fit the razor fine and don't cause any issues.  I'm just not satisfied with the shaving performance.<br /><br />Also, these would be better if they came with the plastic locks that hold the blades in place in the razor.  One of the plastic locks I have is slightly deformed.  Other replacement blades I've ordered have come with these circular plastic locks, but this set doesn't, even when ordered with the heads.  It doesn't say it comes with it so it's no surprise, but from a practical perspective, it would make sense to replace these at the same time and include them with the full set that includes the heads.<br /><br />At the time of this writing, these were significantly cheaper than the OEM blades.  If you're willing to spend extra time to shave in exchange for a lower price, these might be a good option for you.  In my opinion, the price difference spread over the number of shaves that will take longer, isn't worth the time/money trade-off.
Rating: 3 stars