Merkur 201 014 Shavette Razor Blades, Long Blades, 10 Pack, Use with Black Insert, Germany. Precision Blades for the Dovo Shavette Razor. Remove a blade from its packaging and break it carefully in the middle. The blades are initially assembled two and two, and by breaking them you have two blades ready to use. Then attach the blade to the black holder that is included with the Shavette, and attach the holder to the Shavette.