That is to say you can have a faded butch cut or a super short crew cut. The number seven haircut length is close to the crew cut. Haircut Numbers Guide To Hair Clipper Sizes Hairdressing Terminology Atoz Hairstyles The result is a hint of stubble that leaves a slight shadow. . Web One can keep a clean shave with this look as it has a buzz cut with a 38 length in inches and 9525 in millimeters. Web A-Line Bob. Notice that the number one blade cuts the hair to 18 inch or 3 mm. The next styles are less strict on length and more on style and execution. However the style is similar to that of number 5. The only problem is that hair clipper sizeshaircut numbers can be a little confusing to figure out at first. Web This hairstyle requires a hair length of 34 inch with a little longer hair on the scalp than number 5. Engraved number on the clipper. That can be made even shorter with an adjustable blade. ...