Parker shavettes utilizes double edged safety razor blades snapped in two (do this while it is still in the wrapper) It's a cool tool to get introduced to the style of straight razor shaving, and very cheap to run. It is favored by many hair professionals as blades are changed after each customer for hygienic reasons. The blade holder splits in two to accept the blade, and upon closing an additional guard is dropped over the two sides to secure them in place. One of the cheapest funnest ways to start you straight razor journey, give them a go!