Collins produced razors with a circular blade, for a long time I thought they were ladies razors, however, the paperwork with my latest (Collins-)acquisition shows these were definately intended for men.
Changing the blade: press two fingers on the cap and turn, cap will unscrew and you can swap blades. Blades are notched to keep them in position. Razors are adjustable as well: with the knob at the base of the handle you can raise or lower the blade. Lowest position blade is lowered into storage position, and from there bladegap increases.
Changing the blade: press two fingers on the cap and turn, cap will unscrew and you can swap blades. Blades are notched to keep them in position. Razors are adjustable as well: with the knob at the base of the handle you can raise or lower the blade. Lowest position blade is lowered into storage position, and from there bladegap increases.