I'm sure someone else has though of this, just sharing the info! I have two blades I use. Astra SP's and MedPreps, but we all know they don't come in nice plastic boxes. I tried some Feathers though and since I'm not going to use them any more I swapped out the blades I do use into the nice Feather boxes. Blasphemy? Maybe. But it works! Great for travel too!