The Andis size 0000A is a detachable graduation blade for very close haircutting work. In Andis's blade-length comparison chart, this size leaves approximately 1/75 inch, or 0.35 mm, of hair. That places it between the shorter 0000 and longer 000 settings in the chart, providing an intermediate cutting length when planning a closely graduated haircut. The 0000A designation identifies a specific blade length, so check the complete size marking when selecting a replacement.

The removable blade format lets you exchange cutting lengths as the haircut progresses. Use it with a confirmed compatible detachable-blade clipper, following that tool's fitting instructions.

Regular maintenance includes brushing away trapped hair and cleaning the blade after use. Andis recommends oiling clipper blades between haircuts and blotting away excess lubricant with a clean, dry cloth. Check the blade's condition before the next cut.