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Twist to Open

Twist-to-open razors are also called TTO, butterfly, or silo razors. They are a one-piece design with no removable parts. These razors are identified by a cutting head with 2 hinged plates. When the knob is turned, a mechanical release triggers the plates to open or close exposing the inside of the cutting head, so that the used blade and be easily removed and replaced. The twist-to-open razor design allows for a fast blade replacement between shaves making it a popular option for many wet shavers.