Feather professional blades will fit any of the artist club razors. Manufactured to the highest quality standards, and designed for professional use, you can expect them to provide the closest and smoothest shave possible. Blade performance is equal to that of a 4/8 or 5/8 size traditional straight razor. The thinner blade allows greater edge flexibility to better conform to facial contours. If you want the closeness of a barbershop straight razor shave, the feather professional blade is a great option.