Question: what is a 2 blade?
Answer: Notice that the number one blade cuts the hair to 1/8 inch or 3 mm. ... Notice that the number two guard achieves a 1/4 inch or 6 mm cut. Number three cuts the hair at a length of 3/8 inch or 10 mm. Number four is a 1/2 inch or 13 mm. The five guard cuts at 5/8 inch or 16 mm.