Hair clipper set Clippers come in all shapes, sizes, and motor strengths. Generally, they all come with a full set of guards. These guards slip over the teeth of the clippers, and keep the person cutting hair, from taking too much off. These guards are in one eighth inch increments. Most clippers have an arm on the side that will allow the teeth to be extended out, making the guard an added one sixteenth of a inch long, or a “half”, for example, a number 4 guard extended out would then be a 4 and a half. Blended style Depending on the haircut, you will most likely be doing a blended style. Where the haircut starts off very short at the bottom near the nape, and around the ears, and becomes longer as it goes up towards the top of the head. To do a blended haircut, using clippers, you must find the widest part of the head. In the back of the head, there is a bone that sticks out slightly, this is called the occipital bone. This bone is the widest part of the back of the head. When b...