found the solution; today afternoon (or yesterday as we are now in wednesday ) i was coming back to home and i stopped to find something for decoration. i found those bags with zip n store (i guess that's how they are called in US) (not the zip as itself but same as the fridge bags ) with a hole to use with an aspirator to vacuum all air inside if the bag. now i am happy and not wondering about the blades. they are all get oiled, put in razor bags made by leather which i bought few years ago. o